WEBVTT 00:00:00.000 --> 00:00:03.120 So today we're opening the blueprints on a figure 00:00:03.120 --> 00:00:06.080 whose vision, I mean, it didn't just prefigure 00:00:06.080 --> 00:00:09.060 the modern age. No, it really laid the conceptual 00:00:09.060 --> 00:00:11.980 foundations for it. We are diving into the life 00:00:11.980 --> 00:00:14.500 and work of the English polymath, Charles Babbage. 00:00:14.720 --> 00:00:16.379 I mean, it's really not an overstatement to call 00:00:16.379 --> 00:00:18.739 Babbage the original technoprophet. He was so 00:00:18.739 --> 00:00:20.660 much more than just a brilliant mathematician 00:00:20.660 --> 00:00:24.839 or an inventor. Right. He was a mechanical engineer, 00:00:25.140 --> 00:00:27.780 a philosopher, a social critic. And a political 00:00:27.780 --> 00:00:31.260 reformer. Exactly. He approached every single 00:00:31.260 --> 00:00:33.740 problem in life, whether it was calculating orbits 00:00:33.740 --> 00:00:35.740 or, I don't know, dealing with street noise, 00:00:35.939 --> 00:00:38.600 with the same rigorous data -driven methodology. 00:00:38.979 --> 00:00:41.460 And that methodology is precisely why he carries 00:00:41.460 --> 00:00:43.500 the title we all associate with him today. The 00:00:43.500 --> 00:00:46.100 father of the computer. Exactly. He originated 00:00:46.100 --> 00:00:48.979 the core concepts of the digital programmable 00:00:48.979 --> 00:00:52.619 computer. So our mission in this deep dive is 00:00:52.619 --> 00:00:55.200 to unpack those essential ideas, the architectural 00:00:55.200 --> 00:00:57.820 genius that we find in his designs for the analytical 00:00:57.820 --> 00:01:00.850 engine. But we can't stop there. We also need 00:01:00.850 --> 00:01:03.789 to dedicate some real time to exploring the, 00:01:03.869 --> 00:01:06.930 well, the surprisingly diverse range of his other 00:01:06.930 --> 00:01:10.090 interests. Because they all illustrate his total 00:01:10.090 --> 00:01:12.790 unwavering commitment to logic and efficiency, 00:01:13.209 --> 00:01:16.569 whether he was reforming economics or, you know, 00:01:16.569 --> 00:01:18.790 designing the first computer printer. The sheer 00:01:18.790 --> 00:01:21.569 scope of his intellectual ambition is what makes 00:01:21.569 --> 00:01:23.829 him such a compelling character. He was a man 00:01:23.829 --> 00:01:27.239 fighting the intellectual and... the mechanical 00:01:27.239 --> 00:01:30.560 limitations of the 19th century, while conceptually 00:01:30.560 --> 00:01:33.040 he was living in the 21st. Absolutely. And to 00:01:33.040 --> 00:01:35.140 kick things off, here's a critical nugget that 00:01:35.140 --> 00:01:38.840 just sets the stage for his whole legacy. Babbage 00:01:38.840 --> 00:01:40.980 designed not only the calculating machines, but 00:01:40.980 --> 00:01:43.540 also the very first computer printers. Which 00:01:43.540 --> 00:01:46.120 is incredible on its own. It is. They were intended 00:01:46.120 --> 00:01:49.280 to engrave the results directly onto metal plates, 00:01:49.519 --> 00:01:51.599 which would eliminate any chance of human error 00:01:51.599 --> 00:01:53.859 and transcription. The whole system. The whole 00:01:53.859 --> 00:01:57.439 system. But the truly remarkable part, the part 00:01:57.439 --> 00:01:59.719 that really justifies his visionary status, is 00:01:59.719 --> 00:02:02.920 this. Babbage died without ever completing his 00:02:02.920 --> 00:02:05.180 major designs, the difference engine and the 00:02:05.180 --> 00:02:09.280 analytical engine. Yet decades, even a century 00:02:09.280 --> 00:02:12.969 later, functioning replicas were built. And this 00:02:12.969 --> 00:02:16.129 is the key. They were built using only the manufacturing 00:02:16.129 --> 00:02:19.490 tolerances and techniques available in the 1800s. 00:02:19.490 --> 00:02:22.030 And that reconstruction effort, it proved beyond 00:02:22.030 --> 00:02:24.789 a shadow of a doubt that his designs were completely 00:02:24.789 --> 00:02:27.750 sound. Right. His failure wasn't a conceptual 00:02:27.750 --> 00:02:30.830 failure of engineering or logic. It was a failure 00:02:30.830 --> 00:02:34.120 of funding. of mechanical tolerances, and maybe 00:02:34.120 --> 00:02:36.219 just the political will of his time. He was just 00:02:36.219 --> 00:02:38.560 too far ahead. He's building too big, too complex, 00:02:38.560 --> 00:02:40.599 and way too far ahead of the industrial infrastructure 00:02:40.599 --> 00:02:43.240 that was available. And that is the context we 00:02:43.240 --> 00:02:45.199 have to hold as we look at his initial motivation, 00:02:45.500 --> 00:02:48.300 which really stemmed from a real national crisis, 00:02:48.400 --> 00:02:50.479 the crisis of error. Okay, so let's unpack Babbage 00:02:50.479 --> 00:02:52.419 the man and the environment that forged this 00:02:52.419 --> 00:02:55.900 singular obsession with eliminating error. We 00:02:55.900 --> 00:02:58.479 know he was born in 1791. Yep, confirmed by his 00:02:58.479 --> 00:03:00.740 baptism record from early the next year. And 00:03:00.740 --> 00:03:03.039 what's immediately striking is that Babbage was 00:03:03.039 --> 00:03:06.280 not driven by the necessity of, you know, earning 00:03:06.280 --> 00:03:09.560 a living. He was extremely well off. That financial 00:03:09.560 --> 00:03:12.539 context is the bedrock of his entire career path. 00:03:13.099 --> 00:03:16.379 When his father died in 1827, Babbage inherited 00:03:16.379 --> 00:03:18.500 a considerable fortune. I think it was around 00:03:18.500 --> 00:03:21.819 100 ,000 pounds. Wow. Which, if you translate 00:03:21.819 --> 00:03:24.120 it to today, is somewhere around $15 million. 00:03:24.539 --> 00:03:27.590 So he had freedom. Total financial freedom. And 00:03:27.590 --> 00:03:29.990 that allowed him to pursue these monumental, 00:03:30.349 --> 00:03:33.389 multi -decade projects that had no immediate 00:03:33.389 --> 00:03:36.169 market potential and that required constant, 00:03:36.270 --> 00:03:38.710 massive personal investment. So he never had 00:03:38.710 --> 00:03:41.210 to compromise his vision. Never. Not for commercial 00:03:41.210 --> 00:03:43.990 viability, not for bureaucratic demands, which 00:03:43.990 --> 00:03:47.169 both enabled his genius and arguably complicated 00:03:47.169 --> 00:03:49.830 his ability to deliver a finished product. And 00:03:49.830 --> 00:03:51.930 that freedom really allowed him to be intensely 00:03:51.930 --> 00:03:53.969 critical of the existing academic structures. 00:03:54.289 --> 00:03:56.110 Let's look at his time at Cambridge, first at 00:03:56.110 --> 00:03:58.629 Trinity, then Peterhouse, starting in 1810. Right. 00:03:58.750 --> 00:04:00.550 The sources all highlight that he was already 00:04:00.550 --> 00:04:02.729 light years ahead of the curriculum. Oh, completely. 00:04:02.909 --> 00:04:05.370 He was self -taught in the most advanced mathematics 00:04:05.370 --> 00:04:08.430 of the day. He just devoured the works of continental 00:04:08.430 --> 00:04:10.909 figures like Joseph Louis Lagrange and the Italian 00:04:10.909 --> 00:04:13.689 scholar Maria Gaetana Agnese. So when he got 00:04:13.689 --> 00:04:15.930 to Cambridge... He found the standard instruction 00:04:15.930 --> 00:04:18.930 disappointingly narrow and, frankly, outdated. 00:04:19.519 --> 00:04:22.000 So why were they so behind? I mean, what was 00:04:22.000 --> 00:04:24.240 the academic stagnation he was reacting against? 00:04:24.600 --> 00:04:27.040 Well, you have to understand, Britain had clung 00:04:27.040 --> 00:04:29.660 fiercely to the older Newtonian notation for 00:04:29.660 --> 00:04:32.720 calculus. Okay. While the rest of Europe, particularly 00:04:32.720 --> 00:04:35.839 France, had enthusiastically adopted the more 00:04:35.839 --> 00:04:40.079 flexible and... powerful symbolic notation developed 00:04:40.079 --> 00:04:43.779 by Leibniz. Babbage saw this as a national embarrassment. 00:04:44.079 --> 00:04:46.540 A roadblock. A major roadblock to scientific 00:04:46.540 --> 00:04:49.180 progress. The British mathematical establishment 00:04:49.180 --> 00:04:52.100 had become insular, resistant to change, and 00:04:52.100 --> 00:04:54.000 this fundamentally limited what they could even 00:04:54.000 --> 00:04:56.160 conceive of mathematically. So in response to 00:04:56.160 --> 00:04:58.879 this, Babbage, along with a few key allies, took 00:04:58.879 --> 00:05:02.019 decisive action in 1812. They formed the Analytical 00:05:02.019 --> 00:05:04.680 Society. The Analytical Society was a revolutionary 00:05:04.680 --> 00:05:08.120 group. He co -founded it with his contemporaries, 00:05:08.160 --> 00:05:10.759 the astronomer John Herschel and the mathematician 00:05:10.759 --> 00:05:13.439 George Peacock. And their mission was explicit. 00:05:13.819 --> 00:05:17.220 Explicitly to reform British mathematics. And 00:05:17.220 --> 00:05:19.579 they tackled this practically, not just philosophically. 00:05:19.620 --> 00:05:21.980 They started translating French calculus texts. 00:05:22.300 --> 00:05:25.300 Their most important contribution was the English 00:05:25.300 --> 00:05:28.480 translation of Sylvester LeCroy's calculus textbook. 00:05:29.000 --> 00:05:30.600 And this wasn't just about updating notation, 00:05:30.899 --> 00:05:33.360 right? This was changing the intellectual architecture 00:05:33.360 --> 00:05:37.019 of British science. It was. This movement fostered 00:05:37.019 --> 00:05:39.759 what became known as the British Lagrangian School, 00:05:40.000 --> 00:05:42.939 which began focusing heavily on powerful symbolic 00:05:42.939 --> 00:05:46.079 methods. Things like formal power series, functional 00:05:46.079 --> 00:05:48.959 equations, operator methods. Oh, so here's where 00:05:48.959 --> 00:05:51.470 we make that crucial conceptual connection. Why 00:05:51.470 --> 00:05:54.009 does a deep dive into abstract mathematical reform 00:05:54.009 --> 00:05:56.730 matter for building a physical machine? Because 00:05:56.730 --> 00:05:58.670 the calculation principles developed by this 00:05:58.670 --> 00:06:01.189 school, specifically those focused on generalized 00:06:01.189 --> 00:06:04.029 methods like difference equations, were the exact 00:06:04.029 --> 00:06:06.790 mathematical tools Babbage would later use as 00:06:06.790 --> 00:06:09.029 the core operating logic of his difference engine. 00:06:09.399 --> 00:06:11.839 So he didn't just invent the machine. He and 00:06:11.839 --> 00:06:14.339 his friends had to fundamentally reform the mathematics 00:06:14.339 --> 00:06:17.019 that would run on the machine. Precisely. They 00:06:17.019 --> 00:06:19.699 provided the theoretical foundation for mechanizing 00:06:19.699 --> 00:06:23.040 complex calculations. If you can define a problem 00:06:23.040 --> 00:06:25.980 using difference equations, you can reduce complex 00:06:25.980 --> 00:06:29.259 operations like squaring a number or finding 00:06:29.259 --> 00:06:31.720 a tangent into simple repetitive additions. And 00:06:31.720 --> 00:06:34.399 that is the conceptual leap. That's the entire 00:06:34.399 --> 00:06:36.560 leap that allows machinery to take over from 00:06:36.560 --> 00:06:39.529 human thought. And what drove... this desire 00:06:39.529 --> 00:06:42.689 to mechanize, the crisis of error. Let's explain 00:06:42.689 --> 00:06:44.970 for you, the listener, the real -world stakes 00:06:44.970 --> 00:06:47.870 of the early 1800s. The stakes were incredibly 00:06:47.870 --> 00:06:50.689 high. This was the age of oceanic travel, of 00:06:50.689 --> 00:06:53.250 developing industry, advanced astronomy, and 00:06:53.250 --> 00:06:55.930 all these fields relied entirely on published 00:06:55.930 --> 00:06:58.910 mathematical, astronomical, and navigation tables. 00:06:59.189 --> 00:07:01.709 Logarithms, cosines, primes. Yeah, out of it. 00:07:01.790 --> 00:07:04.089 Nautical almanacs. The problem was that these 00:07:04.089 --> 00:07:07.029 tables were notoriously, dangerously error -ridden. 00:07:07.279 --> 00:07:09.540 And why the constant mistakes? The production 00:07:09.540 --> 00:07:12.240 process was entirely manual. It relied on highly 00:07:12.240 --> 00:07:15.139 skilled yet fallible human workers called human 00:07:15.139 --> 00:07:17.379 computers. These workers would calculate the 00:07:17.379 --> 00:07:20.199 values, then transcribe them, then read them, 00:07:20.379 --> 00:07:22.579 and then a typesetter would set the printing 00:07:22.579 --> 00:07:25.279 plate. So four stages for mistakes to creep in. 00:07:25.540 --> 00:07:29.480 Exactly. And a single misplaced digit in a navigation 00:07:29.480 --> 00:07:33.120 table could cost a ship, a cargo, or a life. 00:07:33.240 --> 00:07:35.959 It was a national security, economic, and scientific 00:07:35.959 --> 00:07:39.189 problem. The famous story of Babbage's aha moment 00:07:39.189 --> 00:07:41.970 highlights this perfectly. It's recounted that 00:07:41.970 --> 00:07:44.509 around 1812, he was working with John Herschel 00:07:44.509 --> 00:07:47.009 on one of these tables. And after checking and 00:07:47.009 --> 00:07:49.529 rechecking the figures, Babbage just threw down 00:07:49.529 --> 00:07:51.810 his pen in frustration and famously exclaimed, 00:07:51.870 --> 00:07:54.269 I wish to God these calculations had been executed 00:07:54.269 --> 00:07:57.389 by steam. That one moment, it just crystallized 00:07:57.389 --> 00:08:00.129 his life's work. He realized that the human element 00:08:00.129 --> 00:08:02.560 was the weak link. And he also understood that 00:08:02.560 --> 00:08:04.720 complex calculation could be broken down. Right. 00:08:04.779 --> 00:08:06.699 He looked at the work being done in France at 00:08:06.699 --> 00:08:09.379 the Bureau de Longitude under Gaspard Duprony. 00:08:09.759 --> 00:08:12.819 Duprony had hired 80 human computers and organized 00:08:12.819 --> 00:08:15.160 them like an assembly line. So each person only 00:08:15.160 --> 00:08:18.279 did one small part. A very small part. He restricted 00:08:18.279 --> 00:08:21.959 each person to only the simplest arithmetic addition 00:08:21.959 --> 00:08:25.120 and subtraction. So Duprony proved that calculation 00:08:25.120 --> 00:08:28.410 could be industrialized. Babbage's genius was 00:08:28.410 --> 00:08:30.709 realizing that if the work could be reduced to 00:08:30.709 --> 00:08:33.450 these repetitive, simple steps, then the labor 00:08:33.450 --> 00:08:35.309 could be taken over completely by machinery. 00:08:36.009 --> 00:08:38.929 Machinery that was quicker, tireless, and most 00:08:38.929 --> 00:08:42.049 importantly, immune to human fatigue or transcription 00:08:42.049 --> 00:08:44.909 error. It's a perfect analogy. Industrialization 00:08:44.909 --> 00:08:47.850 applied not to textiles or iron, but to thought 00:08:47.850 --> 00:08:49.929 itself. He wasn't replacing the thinking. He 00:08:49.929 --> 00:08:51.649 was replacing the drudgery of the execution. 00:08:51.970 --> 00:08:54.370 And Babbage immediately tied this philosophical 00:08:54.370 --> 00:08:56.850 quest to the institutional scientific structure. 00:08:57.029 --> 00:09:00.049 In 1820, he co -founded the Royal Astronomical 00:09:00.049 --> 00:09:03.049 Society. Initially called the Astronomical Society 00:09:03.049 --> 00:09:05.490 of London. And this is a pivotal move because 00:09:05.490 --> 00:09:07.830 the society's original goals were directly linked 00:09:07.830 --> 00:09:10.850 to his mechanical agenda. They wanted to standardize 00:09:10.850 --> 00:09:13.549 the data. Exactly. To standardize and circulate 00:09:13.549 --> 00:09:16.090 astronomical calculation data. So by making the 00:09:16.090 --> 00:09:17.909 problem of error correction a core objective 00:09:17.909 --> 00:09:20.230 of the scientific community, he gave weight and 00:09:20.230 --> 00:09:22.970 urgency to his mechanical solution. And the community 00:09:22.970 --> 00:09:25.990 recognized this. They did. They awarded him the 00:09:25.990 --> 00:09:29.389 Society's Gold Medal in 1824, specifically for 00:09:29.389 --> 00:09:32.070 the idea of the calculating engine, before a 00:09:32.070 --> 00:09:34.870 single completed machine even existed. So the 00:09:34.870 --> 00:09:38.370 stage was set. The mathematical theory was reformed. 00:09:38.679 --> 00:09:40.820 The political urgency was established and the 00:09:40.820 --> 00:09:44.120 funding was secured. The goal was simple, eliminate 00:09:44.120 --> 00:09:46.919 human fallibility. And that leads us directly 00:09:46.919 --> 00:09:49.320 to the mechanical realization of this vision, 00:09:49.419 --> 00:09:51.980 the monumental task of building the Difference 00:09:51.980 --> 00:09:54.610 Engine. The difference engine number one, which 00:09:54.610 --> 00:09:57.850 Babbage started developing in 1822, was his first 00:09:57.850 --> 00:10:00.389 major physical endeavor. It was a specialized 00:10:00.389 --> 00:10:03.230 machine, not a general computer. Right. It was 00:10:03.230 --> 00:10:05.269 designed to do one thing brilliantly. Which was? 00:10:05.570 --> 00:10:07.629 It was a single -purpose calculator built to 00:10:07.629 --> 00:10:11.190 automatically compute polynomial functions. Now, 00:10:11.190 --> 00:10:12.870 for you, the listener who might be feeling a 00:10:12.870 --> 00:10:15.340 bit lost in the math here. When we talk about 00:10:15.340 --> 00:10:17.179 the method of finite differences, we're talking 00:10:17.179 --> 00:10:19.519 about a mathematical technique that simplifies 00:10:19.519 --> 00:10:22.740 a complex calculation. Like a curve or a logarithm. 00:10:22.899 --> 00:10:25.399 Exactly. It breaks it down into a series of iterative 00:10:25.399 --> 00:10:27.179 additions. Could you give us a quick analogy 00:10:27.179 --> 00:10:30.200 for that? Sure. Imagine you want to plot a complex, 00:10:30.240 --> 00:10:33.080 smooth curve, like a parabola. But all you have 00:10:33.080 --> 00:10:35.620 is a ruler and the ability to add numbers. Okay. 00:10:35.919 --> 00:10:38.379 The method of differences breaks that smooth 00:10:38.379 --> 00:10:42.120 curve down into infinitesimally small, repeating 00:10:42.120 --> 00:10:45.399 straight line segments. By calculating the difference 00:10:45.399 --> 00:10:48.399 between successive values in the curve, you only 00:10:48.399 --> 00:10:50.779 ever need to perform addition to find the next 00:10:50.779 --> 00:10:53.159 value in the series. So it completely avoids 00:10:53.159 --> 00:10:56.019 multiplication and division. It entirely avoids 00:10:56.019 --> 00:10:57.940 them, which are the most error -prone operations. 00:10:58.299 --> 00:11:01.100 The whole elegance of the machine rested on this 00:11:01.100 --> 00:11:04.480 clever avoidance of complex arithmetic. And this 00:11:04.480 --> 00:11:06.840 elegance impressed the government. As we noted, 00:11:06.960 --> 00:11:09.730 they invested significantly. Babbage received 00:11:09.730 --> 00:11:13.210 an astonishing 17 ,000 pounds in government funding. 00:11:13.409 --> 00:11:15.549 A massive sum for the time for a scientific instrument. 00:11:15.710 --> 00:11:17.789 Yet difference engine number one was never finished. 00:11:18.049 --> 00:11:20.149 And this is the defining tragedy of Babbage's 00:11:20.149 --> 00:11:22.509 early career. This conflict between the scale 00:11:22.509 --> 00:11:24.629 of his design and the limits of contemporary 00:11:24.629 --> 00:11:26.870 engineering. The precision required was just 00:11:26.870 --> 00:11:29.470 too high. Far beyond what the 1820s industrial 00:11:29.470 --> 00:11:32.090 infrastructure could routinely provide. We're 00:11:32.090 --> 00:11:34.049 talking about a mechanical beast here, aren't 00:11:34.049 --> 00:11:37.279 we? Oh, a monstrous one. The incomplete first 00:11:37.279 --> 00:11:40.639 design would have contained an estimated 25 ,000 00:11:40.639 --> 00:11:43.799 separate custom -made parts. It would have weighed 00:11:43.799 --> 00:11:47.919 15 short tons and stood 8 feet high. So Babbage 00:11:47.919 --> 00:11:50.519 wasn't just designing a machine. He was pioneering 00:11:50.519 --> 00:11:53.480 the tools to build the machine. He had to. He 00:11:53.480 --> 00:11:56.480 needed unique, elaborate jigs and fixtures to 00:11:56.480 --> 00:11:59.059 achieve the required precision for the gears 00:11:59.059 --> 00:12:01.860 and the linkages. And this need for custom tooling 00:12:01.860 --> 00:12:04.779 led to the major breakdown in the project, the 00:12:04.779 --> 00:12:07.759 conflict with his engineer, Joseph Clement. It 00:12:07.759 --> 00:12:10.220 was a classic 19th century industrial dispute, 00:12:10.320 --> 00:12:12.379 and it was just exacerbated by the scale of the 00:12:12.379 --> 00:12:15.200 innovation. Clement was Babbage's primary engineer, 00:12:15.399 --> 00:12:17.600 a highly skilled machinist. And the conflict 00:12:17.600 --> 00:12:21.700 was about costs and... Two Z issues, yeah. Spiraling 00:12:21.700 --> 00:12:24.419 costs as Babbage continually refined the design. 00:12:24.580 --> 00:12:26.919 And the really contentious issue of tool ownership. 00:12:27.259 --> 00:12:29.860 Clement insisted that the elaborate custom -made 00:12:29.860 --> 00:12:32.220 machine tools, which were essential for the precision, 00:12:32.440 --> 00:12:34.860 belonged to him, not to the government project. 00:12:35.000 --> 00:12:36.840 So when the money ran out. When the government 00:12:36.840 --> 00:12:39.320 funding temporarily dried up and the partnership 00:12:39.320 --> 00:12:42.639 dissolved, Clement took the tools. And the project 00:12:42.639 --> 00:12:45.480 just stalled, never to be restarted. It's an 00:12:45.480 --> 00:12:48.360 incredible illustration of how innovation relies 00:12:48.360 --> 00:12:51.519 not just on ideas, but on supply chains and industrial 00:12:51.519 --> 00:12:53.700 relationships. Absolutely. The difference engine 00:12:53.700 --> 00:12:56.460 number one was abandoned, but Babbage, being 00:12:56.460 --> 00:12:58.980 Babbage, immediately started designing a better 00:12:58.980 --> 00:13:01.480 version. That's the mark of his resilience, isn't 00:13:01.480 --> 00:13:05.590 it? Between 1847 and 1849, he designed the blueprints 00:13:05.590 --> 00:13:07.830 for Difference Engine No. 2. And it was a big 00:13:07.830 --> 00:13:10.889 improvement. Huge. It was smaller, faster, and 00:13:10.889 --> 00:13:12.990 used less than a third of the parts of the first 00:13:12.990 --> 00:13:15.870 design, about 8 ,000 parts. It was a testament 00:13:15.870 --> 00:13:18.190 to his refined engineering skill. But he couldn't 00:13:18.190 --> 00:13:20.710 get funding. He applied again, presented this 00:13:20.710 --> 00:13:23.429 superior, more elegant design, but the government, 00:13:23.529 --> 00:13:25.830 having already spent 17 ,000 pounds on the first 00:13:25.830 --> 00:13:29.389 failure, politely declined. So here we have this 00:13:29.389 --> 00:13:32.929 ultimate paradox. the conceptual genius who couldn't 00:13:32.929 --> 00:13:35.409 complete his work in his lifetime, which makes 00:13:35.409 --> 00:13:37.450 the modern proof of concept even more vital. 00:13:37.610 --> 00:13:40.690 It's everything. The reconstruction of Difference 00:13:40.690 --> 00:13:42.809 Engine No. 2 at the Science Museum in London 00:13:42.809 --> 00:13:45.889 is perhaps the most important validation of Babbage's 00:13:45.889 --> 00:13:49.789 entire life. They started it in 1985 and finished 00:13:49.789 --> 00:13:53.519 in 1991. The museum's team meticulously followed 00:13:53.519 --> 00:13:56.120 Babbage's original drawings, and this is the 00:13:56.120 --> 00:13:59.360 crucial point, they used only 19th century manufacturing 00:13:59.360 --> 00:14:02.220 tolerances and techniques. They wanted to answer 00:14:02.220 --> 00:14:04.779 that historical question, could he have built 00:14:04.779 --> 00:14:08.039 this? And the answer was a resounding yes. It 00:14:08.039 --> 00:14:11.139 worked. It worked flawlessly. The machine successfully 00:14:11.139 --> 00:14:13.980 performed its first calculation, delivering results 00:14:13.980 --> 00:14:17.789 accurately to 31 digits. Wow. It proved that 00:14:17.789 --> 00:14:19.909 the technology existed, the design was perfect, 00:14:20.070 --> 00:14:22.789 and the only missing element in the 1840s had 00:14:22.789 --> 00:14:25.210 been the concentrated financial commitment and 00:14:25.210 --> 00:14:27.850 sustained engineering oversight that Babbage 00:14:27.850 --> 00:14:30.009 just struggled to maintain. And let's not forget 00:14:30.009 --> 00:14:32.210 the ancillary inventions that came out of this. 00:14:32.370 --> 00:14:35.250 In 2000, the Science Museum completed the Engines 00:14:35.250 --> 00:14:37.669 Printer. Right, which was a critical and often 00:14:37.669 --> 00:14:40.029 overlooked part of Babbage's system. It wasn't 00:14:40.029 --> 00:14:42.549 just an accessory. No, it was fundamental to 00:14:42.549 --> 00:14:45.269 his core mission. If the whole point was to eliminate 00:14:45.269 --> 00:14:48.049 error, you couldn't trust a human typesetter 00:14:48.049 --> 00:14:51.149 to transcribe the final calculated number. So 00:14:51.149 --> 00:14:53.990 the printer closed the loop. Completely. Babbage's 00:14:53.990 --> 00:14:56.490 design automatically engraved the output onto 00:14:56.490 --> 00:14:59.879 a soft metal plate ready for printing. It ensured 00:14:59.879 --> 00:15:02.100 the data generated by the reliable machine was 00:15:02.100 --> 00:15:05.200 recorded reliably. A true predecessor of modern 00:15:05.200 --> 00:15:07.519 output devices. Definitely. And the influence 00:15:07.519 --> 00:15:09.720 of the difference engine, even in its fragmented 00:15:09.720 --> 00:15:12.659 state, extended directly into the 20th century. 00:15:13.240 --> 00:15:16.620 Tell us about Henry Prevost Babbage and the connection 00:15:16.620 --> 00:15:19.139 to the electronic age. So Babbage's youngest 00:15:19.139 --> 00:15:22.200 surviving son, Henry Prevost, he dedicated himself 00:15:22.200 --> 00:15:24.620 to honoring his father's legacy after his death. 00:15:24.779 --> 00:15:26.860 And he managed to build some pieces. He created 00:15:26.860 --> 00:15:29.139 small demonstration pieces based on the difference 00:15:29.139 --> 00:15:32.000 engine number one designs. They were highly simplified 00:15:32.000 --> 00:15:34.799 prototypes, but they kept the idea alive. And 00:15:34.799 --> 00:15:37.059 one of those prototypes traveled across the ocean. 00:15:37.299 --> 00:15:40.480 Indeed. One of Henry Prevost's demonstration 00:15:40.480 --> 00:15:43.779 pieces ended up at Harvard University. And there 00:15:43.779 --> 00:15:46.240 it was later discovered and studied by a pioneering 00:15:46.240 --> 00:15:49.320 American computer scientist named Howard H. Aiken. 00:15:49.480 --> 00:15:52.200 Aiken was designing the Harvard Mark I. Right, 00:15:52.220 --> 00:15:54.639 one of the earliest large -scale electromechanical 00:15:54.639 --> 00:15:57.860 computers in the 1940s. And Aiken explicitly 00:15:57.860 --> 00:16:01.179 cited Babbage's work as a foundational inspiration 00:16:01.179 --> 00:16:04.450 for his own architecture. So the difference engine 00:16:04.450 --> 00:16:06.889 established the mechanical possibility of automatic 00:16:06.889 --> 00:16:10.389 calculation. But Babbage was already moving beyond 00:16:10.389 --> 00:16:13.850 calculation to pure generalized logic. And that 00:16:13.850 --> 00:16:16.450 shift is arguably the most important pivot in 00:16:16.450 --> 00:16:19.090 the history of information technology. He moved 00:16:19.090 --> 00:16:21.629 from the specialist calculator to the universal 00:16:21.629 --> 00:16:23.899 machine. This is the leap that earned Babbage 00:16:23.899 --> 00:16:26.440 his ultimate title. The analytical engine, which 00:16:26.440 --> 00:16:29.039 he began sketching around 1834, represents a 00:16:29.039 --> 00:16:31.379 complete shift in thinking. Right. The difference 00:16:31.379 --> 00:16:33.279 engine was specialized. The analytical engine 00:16:33.279 --> 00:16:35.500 was designed for fully general -purpose computation. 00:16:36.039 --> 00:16:38.480 This is where Babbage leaves the 19th century 00:16:38.480 --> 00:16:41.360 entirely and basically defines the 20th and 21st. 00:16:41.539 --> 00:16:43.659 I mean, he really does. The analytical engine 00:16:43.659 --> 00:16:46.779 wasn't just a bigger calculator. It was a conceptually 00:16:46.779 --> 00:16:49.799 complete computer architecture. It was a succession 00:16:49.799 --> 00:16:53.779 of designs, refined over decades, that Babbage 00:16:53.779 --> 00:16:57.000 obsessed over until his death. Let's focus on 00:16:57.000 --> 00:16:58.779 the architecture, because this is the astonishing 00:16:58.779 --> 00:17:02.100 part. What features did the analytical engine 00:17:02.100 --> 00:17:04.619 incorporate that define every modern computer 00:17:04.619 --> 00:17:07.019 sitting on our desks or in our pockets today? 00:17:07.220 --> 00:17:10.680 It used a conceptual split that is now completely 00:17:10.680 --> 00:17:13.420 standard, the separation of data and program 00:17:13.420 --> 00:17:16.400 memory. Babbage called the memory unit the store 00:17:16.400 --> 00:17:18.960 and the arithmetic processing unit the mill. 00:17:19.119 --> 00:17:21.460 The store held the data, the mill did the work. 00:17:21.579 --> 00:17:23.579 Exactly. The store held the numbers, and the 00:17:23.579 --> 00:17:25.380 mill was where the actual calculation of the 00:17:25.380 --> 00:17:28.039 arithmetic took place. This is the CPRM division 00:17:28.039 --> 00:17:30.799 we still use today. And it also operated on instructions. 00:17:31.180 --> 00:17:33.339 Yes, and it had a dedicated control unit that 00:17:33.339 --> 00:17:35.279 was capable of executing sequential control. 00:17:35.420 --> 00:17:38.940 So do step one, then step two, and so on. But 00:17:38.940 --> 00:17:41.269 here is the genuine revolution. Babbage designed 00:17:41.269 --> 00:17:43.450 it to handle conditional branching and looping. 00:17:43.509 --> 00:17:46.509 Those concepts are so essential to programming 00:17:46.509 --> 00:17:49.269 logic. So for you, the listener, what do those 00:17:49.269 --> 00:17:52.670 terms mean in practice? Looping means instructing 00:17:52.670 --> 00:17:54.569 the machine to repeat a sequence of instructions 00:17:54.569 --> 00:17:57.609 automatically without any human input until a 00:17:57.609 --> 00:18:00.089 condition is met. Think of performing the same 00:18:00.089 --> 00:18:03.470 calculation 50 times over. Okay. And branching? 00:18:03.589 --> 00:18:05.569 Conditional branching means the machine can make 00:18:05.569 --> 00:18:08.630 a decision. If this number is zero, go to instruction 00:18:08.630 --> 00:18:11.470 line 50. otherwise continue to instruction line 00:18:11.470 --> 00:18:15.569 10. It's logic. It's pure logic. Those two concepts, 00:18:15.829 --> 00:18:18.470 looping and branching, are the absolute building 00:18:18.470 --> 00:18:21.529 blocks of every complex algorithm and software 00:18:21.529 --> 00:18:24.230 program. Without them, you only have arithmetic. 00:18:24.549 --> 00:18:27.450 With them, you have programming. So if we connect 00:18:27.450 --> 00:18:29.789 all these features, the store, the mill, the 00:18:29.789 --> 00:18:31.970 control unit, the looping branching to the bigger 00:18:31.970 --> 00:18:34.349 picture, it means the analytical engine would 00:18:34.349 --> 00:18:36.269 have been the first mechanical device to be, 00:18:36.349 --> 00:18:39.009 in principle, Turing complete. That is the ultimate 00:18:39.009 --> 00:18:41.609 designation. It's huge. Turing completeness, 00:18:41.609 --> 00:18:44.549 you know, named after Alan Turing, is the theoretical 00:18:44.549 --> 00:18:48.049 property that defines a universal computer. If 00:18:48.049 --> 00:18:50.730 a device is Turing complete, It has the theoretical 00:18:50.730 --> 00:18:53.970 capacity to solve any computational problem that 00:18:53.970 --> 00:18:56.950 any modern electronic computer can solve. Provided 00:18:56.950 --> 00:19:00.089 it has infinite time and memory. Exactly. And 00:19:00.089 --> 00:19:02.690 Babbage designed a machine built of brass gears 00:19:02.690 --> 00:19:06.349 and steam that possessed this universal theoretical 00:19:06.349 --> 00:19:09.589 capability. decades before the mathematics to 00:19:09.589 --> 00:19:12.809 describe that capability even existed. It's absolutely 00:19:12.809 --> 00:19:14.589 mind -boggling. And the physical manifestation 00:19:14.589 --> 00:19:17.269 of the program was the punched card system. That 00:19:17.269 --> 00:19:19.230 was the genius of his innovation. He borrowed 00:19:19.230 --> 00:19:21.509 heavily from a contemporary piece of manufacturing 00:19:21.509 --> 00:19:25.009 technology, the jacquard loom. Right, for weaving. 00:19:25.230 --> 00:19:27.630 The jacquard loom used a loop of stiff, heavy 00:19:27.630 --> 00:19:30.210 cards with holes punched into them to dictate 00:19:30.210 --> 00:19:32.069 these intricate weaving patterns automatically. 00:19:32.799 --> 00:19:35.180 Babbage realized these cards could be repurposed 00:19:35.180 --> 00:19:37.680 as a machine's software. So one set of cards 00:19:37.680 --> 00:19:40.420 for data, one for instructions. Yep, one for 00:19:40.420 --> 00:19:42.799 the numerical data and another set for the operational 00:19:42.799 --> 00:19:45.480 instructions. The loom analogy is so powerful 00:19:45.480 --> 00:19:47.859 because it shows that separation of the abstract 00:19:47.859 --> 00:19:50.400 instructions set from the physical machine doing 00:19:50.400 --> 00:19:53.119 the work. Babbage wasn't just designing the hardware. 00:19:53.400 --> 00:19:56.700 He was creating the first operating system. He 00:19:56.700 --> 00:19:59.579 was, and he wrote actual programs for this engine 00:19:59.579 --> 00:20:03.299 between 1837 and 1840. He worked out the complex 00:20:03.299 --> 00:20:06.019 sequences of operations needed to carry out sophisticated 00:20:06.019 --> 00:20:08.920 mathematical tasks. Which brings us to his most 00:20:08.920 --> 00:20:11.900 famous and perhaps most important collaborator, 00:20:11.980 --> 00:20:14.380 Ada Lovelace. Right. Lovelace, the daughter of 00:20:14.380 --> 00:20:16.819 Lord Byron, was a brilliant mathematician in 00:20:16.819 --> 00:20:19.339 her own right who corresponded extensively with 00:20:19.339 --> 00:20:22.400 Babbage. Her contribution is just central to 00:20:22.400 --> 00:20:24.470 the history of programming. And her major public 00:20:24.470 --> 00:20:27.549 work was related to Babbage's 1840 lectures in 00:20:27.549 --> 00:20:30.369 Turin, Italy. Exactly. Babbage, you know, often 00:20:30.369 --> 00:20:32.390 frustrated by the lack of official recognition 00:20:32.390 --> 00:20:34.829 and funding in Britain, went abroad to explain 00:20:34.829 --> 00:20:38.109 his ideas. An Italian military engineer and mathematician, 00:20:38.529 --> 00:20:41.470 Luigi Menebrea, took detailed notes and published 00:20:41.470 --> 00:20:43.809 them in French. And Lovelace was tasked with 00:20:43.809 --> 00:20:46.170 translating Menebrea's notes into English. But 00:20:46.170 --> 00:20:49.069 Babbage explicitly asked her to add an appendix 00:20:49.069 --> 00:20:53.230 of her own. These were her famous notes A. Through 00:20:53.230 --> 00:20:56.589 G, which expanded significantly on his concepts. 00:20:56.869 --> 00:20:59.230 And it was in Note G where she really cemented 00:20:59.230 --> 00:21:01.549 her legacy. She did. She developed this complex 00:21:01.549 --> 00:21:05.029 sequence of steps, an algorithm explicitly designed 00:21:05.029 --> 00:21:07.369 to enable the analytical engine to calculate 00:21:07.369 --> 00:21:10.069 a series of Bernoulli numbers. Which is not a 00:21:10.069 --> 00:21:12.829 simple task. Not at all. This algorithm showed 00:21:12.829 --> 00:21:14.990 the full potential of the machine to handle complex 00:21:14.990 --> 00:21:18.170 iterative tasks moving far beyond mere arithmetic. 00:21:18.910 --> 00:21:21.789 This comprehensive computational plan is why 00:21:21.789 --> 00:21:24.130 she is rightly heralded as the first computer 00:21:24.130 --> 00:21:27.079 programmer. She saw past the numbers to the symbolic 00:21:27.079 --> 00:21:29.039 potential, didn't she? She captured it in her 00:21:29.039 --> 00:21:31.579 famous analogy. That the analytical engine weaves 00:21:31.579 --> 00:21:34.259 algebraical patterns just as the jacquard loom 00:21:34.259 --> 00:21:37.059 weaves flowers and leaves. It's poetic, but also 00:21:37.059 --> 00:21:40.319 deeply scientific. It is. She understood that 00:21:40.319 --> 00:21:42.079 the machine was not restricted to calculating 00:21:42.079 --> 00:21:44.759 numerical values. It could manipulate any symbols, 00:21:44.920 --> 00:21:47.559 whether they represented numbers or musical notes 00:21:47.559 --> 00:21:49.819 or algebraic variables, according to a set of 00:21:49.819 --> 00:21:52.079 rules. That's the definition of a universal symbol 00:21:52.079 --> 00:21:54.619 manipulator. Which is precisely what modern computing 00:21:54.619 --> 00:21:57.460 is built on. Yet, despite this prophetic design 00:21:57.460 --> 00:21:59.960 and this amazing programming, the machine remained 00:21:59.960 --> 00:22:03.000 perpetually unfinished. A masterpiece of theoretical 00:22:03.000 --> 00:22:05.079 engineering. A masterpiece of paper and brass, 00:22:05.299 --> 00:22:08.509 yeah. Yeah. Babbage continually refined the designs 00:22:08.509 --> 00:22:11.390 until his death, often tearing down early models 00:22:11.390 --> 00:22:14.009 or concepts when a more elegant solution presented 00:22:14.009 --> 00:22:16.769 itself. Which is admirable, but... But that habit 00:22:16.769 --> 00:22:19.769 of constant revision, while intellectually admirable, 00:22:19.950 --> 00:22:22.589 definitely contributed to his inability to ever 00:22:22.589 --> 00:22:25.069 deliver a finished, fully operational machine. 00:22:25.430 --> 00:22:27.930 And the unfinished nature of his work has inspired 00:22:27.930 --> 00:22:31.269 modern homage, like the 2011 Plan 28 project. 00:22:31.450 --> 00:22:34.410 Plan 28 is a group of British engineers and researchers... 00:22:34.640 --> 00:22:36.640 dedicated to finally building the analytical 00:22:36.640 --> 00:22:39.220 engine based on Babbage's most refined designs. 00:22:39.500 --> 00:22:42.160 And it forces us to confront the physical reality 00:22:42.160 --> 00:22:44.480 of what he was designing. It really does. When 00:22:44.480 --> 00:22:46.779 you look at the estimated specifications, they 00:22:46.779 --> 00:22:49.279 are staggering for a mechanical device. Give 00:22:49.279 --> 00:22:51.740 us some of those specs. Okay, so the machine 00:22:51.740 --> 00:22:55.099 was estimated to require about 1 ,500 rods and 00:22:55.099 --> 00:22:57.839 5 ,000 wheels for just one column of the register. 00:22:58.079 --> 00:23:01.589 Overall, the memory... was estimated to have 00:23:01.589 --> 00:23:04.950 the equivalent capacity of about 675 bytes. That's 00:23:04.950 --> 00:23:07.349 bytes, not kilobytes or megabytes. Bytes, yeah. 00:23:07.470 --> 00:23:10.410 And the entire mechanical process would run at 00:23:10.410 --> 00:23:14.630 a clock speed about 7 hertz. So conceptually, 00:23:14.650 --> 00:23:18.009 a modern computer, but physically a massive, 00:23:18.069 --> 00:23:21.230 slow -grinding brass behemoth. It just puts into 00:23:21.230 --> 00:23:23.750 perspective what a monumental achievement this 00:23:23.750 --> 00:23:26.549 design was, using only the materials of the 1840s. 00:23:26.609 --> 00:23:28.930 For sure. So Babbage designed the conceptual 00:23:28.930 --> 00:23:31.819 framework. But we've established he wasn't just 00:23:31.819 --> 00:23:34.119 about the mechanics of calculating. Here's where 00:23:34.119 --> 00:23:36.039 it gets really interesting. We turn to the sheer 00:23:36.039 --> 00:23:38.839 breadth of Charles Babbage, the eccentric, the 00:23:38.839 --> 00:23:41.160 economist, the philosopher, and the reformer. 00:23:41.180 --> 00:23:43.480 Right. Let's start with his position at Cambridge, 00:23:43.700 --> 00:23:45.579 where we already noted his frustration with the 00:23:45.579 --> 00:23:49.339 academic environment. From 1828 to 1839, Babbage 00:23:49.339 --> 00:23:51.859 held the most prestigious academic title in Britain. 00:23:52.039 --> 00:23:54.420 Lucasian professor of mathematics. The same chair 00:23:54.420 --> 00:23:57.140 held by Isaac Newton and later Stephen Hawking. 00:23:57.279 --> 00:23:59.569 And famously... Babbage never gave a single lecture 00:23:59.569 --> 00:24:02.009 during his entire 11 -year tenure. Which was 00:24:02.009 --> 00:24:04.230 controversial, to say the least. Oh, yeah. So 00:24:04.230 --> 00:24:06.950 why accept the chair if he didn't intend to lecture? 00:24:07.250 --> 00:24:09.289 He saw the role not as a lecturing position, 00:24:09.490 --> 00:24:11.970 but as a platform for reform and for research. 00:24:12.630 --> 00:24:14.930 Babbage was just out of step with many of his 00:24:14.930 --> 00:24:17.269 colleagues. He wanted a broader curriculum. A 00:24:17.269 --> 00:24:19.930 broader syllabus, greater inclusion of modern 00:24:19.930 --> 00:24:23.210 science, a stronger emphasis on research over 00:24:23.210 --> 00:24:26.130 rote teaching. Figures like his predecessor, 00:24:26.430 --> 00:24:28.690 George Biddleary, and his colleague, William 00:24:28.690 --> 00:24:32.849 Wewell, often opposed his non -conventional methods. 00:24:33.029 --> 00:24:35.289 So he just did his own thing. He believed his 00:24:35.289 --> 00:24:37.630 energy was better spent solving profound scientific 00:24:37.630 --> 00:24:40.950 problems, like building his engines, than repeating 00:24:40.950 --> 00:24:44.150 established material to undergraduates. He definitely 00:24:44.150 --> 00:24:47.400 preferred the dynamism of London. He was an incredibly 00:24:47.400 --> 00:24:50.059 important social figure, often credited with 00:24:50.059 --> 00:24:52.259 importing the scientific soiree from France. 00:24:52.559 --> 00:24:54.960 And turning his Marylebone home into an intellectual 00:24:54.960 --> 00:24:58.380 hub. His Saturday evening gatherings were legendary. 00:24:58.720 --> 00:25:01.119 They were true intellectual mixing pot. Absolutely. 00:25:01.519 --> 00:25:03.640 Bringing together the aristocracy, political 00:25:03.640 --> 00:25:05.859 leaders, military figures, and the scientific 00:25:05.859 --> 00:25:09.720 elite, it reflected Babbage's core belief that 00:25:09.720 --> 00:25:11.900 science shouldn't be confined to dusty university 00:25:11.900 --> 00:25:15.000 halls. It should be central to public life. Exactly. 00:25:15.000 --> 00:25:17.599 Central to public, political, and economic life. 00:25:17.779 --> 00:25:21.079 And this desire to integrate science into public 00:25:21.079 --> 00:25:24.160 life led him to attempt to enter formal politics. 00:25:24.440 --> 00:25:27.539 He stood for parliament twice. For the borough 00:25:27.539 --> 00:25:30.480 of Finsbury, a known reform -minded area, in 00:25:30.480 --> 00:25:34.200 1832 and 1834. He was a genuine reformer. He 00:25:34.200 --> 00:25:37.119 was, but politically unsuccessful. His platform 00:25:37.119 --> 00:25:39.299 included some pretty radical ideas for the time. 00:25:39.599 --> 00:25:42.099 He advocated for the disestablishment of the 00:25:42.099 --> 00:25:44.299 Church of England. He wanted a much broader political 00:25:44.299 --> 00:25:47.019 franchise. So more people voting. Yeah, giving 00:25:47.019 --> 00:25:49.319 more people to vote. And he strongly pushed for 00:25:49.319 --> 00:25:51.579 the inclusion of manufacturers and industrialists 00:25:51.579 --> 00:25:54.079 as key stakeholders in political decision making. 00:25:54.279 --> 00:25:56.880 So why did a reformer fail in a reform -minded 00:25:56.880 --> 00:25:59.480 borough? Well, in 1832, he split the critical 00:25:59.480 --> 00:26:02.119 reform vote and came in third out of five candidates. 00:26:02.829 --> 00:26:07.109 In 1834, he finished dead last. Yeah. While his 00:26:07.109 --> 00:26:09.029 ideas were progressive, his personality was, 00:26:09.250 --> 00:26:12.329 let's say, difficult. He was famously demanding, 00:26:12.809 --> 00:26:15.910 intensely focused, and maybe lacking the patience 00:26:15.910 --> 00:26:17.849 and charm required for political compromise. 00:26:18.190 --> 00:26:20.589 An intellectual purist seeking political office. 00:26:20.809 --> 00:26:23.109 And it seems the political machine was simply 00:26:23.109 --> 00:26:27.039 too messy for his rigorous standards. But if 00:26:27.039 --> 00:26:29.400 he failed in the political arena, he certainly 00:26:29.400 --> 00:26:32.039 succeeded in applying his scientific rigor to 00:26:32.039 --> 00:26:35.500 the industrial world. He published his 1832 book 00:26:35.500 --> 00:26:37.859 on the economy of machinery and manufacturers. 00:26:38.829 --> 00:26:41.009 And this is considered an extremely influential 00:26:41.009 --> 00:26:44.529 early work of operational research. This book 00:26:44.529 --> 00:26:47.250 was Babbage applying the scientific method directly 00:26:47.250 --> 00:26:49.589 to the factory floor. It detailed the organization 00:26:49.589 --> 00:26:51.950 of industrial production. And it is where he 00:26:51.950 --> 00:26:54.349 established his most famous economic contribution, 00:26:54.630 --> 00:26:57.589 known as the Babbage Principle. OK, we need to 00:26:57.589 --> 00:27:00.250 slow down here and explain this clearly. How 00:27:00.250 --> 00:27:02.430 did the Babbage Principle differ from the standard 00:27:02.430 --> 00:27:05.069 division of labor that Adam Smith advocated for? 00:27:05.519 --> 00:27:08.079 So Adam Smith in The Wealth of Nations focused 00:27:08.079 --> 00:27:10.579 on how the division of labor increases productivity 00:27:10.579 --> 00:27:13.339 because workers become highly specialized and 00:27:13.339 --> 00:27:15.839 skilled at one task. Right. Speeding up the production 00:27:15.839 --> 00:27:17.960 rate. Babbage agreed with that, but his insight 00:27:17.960 --> 00:27:20.480 went deeper into cost minimization. So it was 00:27:20.480 --> 00:27:23.039 about the efficiency of labor cost. Precisely. 00:27:23.519 --> 00:27:26.099 Babbage noted that in any industrial process, 00:27:26.380 --> 00:27:29.720 skilled, highly paid workers inevitably spend 00:27:29.720 --> 00:27:32.559 some of their time performing tasks that are 00:27:32.559 --> 00:27:35.259 actually below their skill level. Tasks that 00:27:35.259 --> 00:27:37.839 someone less trained could easily do. Exactly. 00:27:37.980 --> 00:27:40.839 The commercial advantage, Bavage argued, wasn't 00:27:40.839 --> 00:27:43.960 just maximizing output, but minimizing cost by 00:27:43.960 --> 00:27:46.200 ensuring that expensive, high -skill workers 00:27:46.200 --> 00:27:49.259 are assigned only high -skill tasks. And all 00:27:49.259 --> 00:27:52.680 the lower -skill, repetitive tasks should be 00:27:52.680 --> 00:27:55.220 systematically identified and relegated to lower 00:27:55.220 --> 00:27:57.420 -paid employees. So if you're paying a master 00:27:57.420 --> 00:27:59.839 machinist 10 shillings a day, you don't want 00:27:59.839 --> 00:28:02.019 him spending time tightening a simple bolt that 00:28:02.019 --> 00:28:04.000 an apprentice earning six pence could do. Right. 00:28:04.430 --> 00:28:06.390 Babbage showed how this systematic matching of 00:28:06.390 --> 00:28:08.809 skill to required effort provided a massive, 00:28:08.890 --> 00:28:11.589 often hidden, commercial advantage. It essentially 00:28:11.589 --> 00:28:14.269 quantified the economic benefits of skill stratification 00:28:14.269 --> 00:28:17.049 in a way that Smith hadn't. And this principle 00:28:17.049 --> 00:28:19.750 profoundly influenced later generations, for 00:28:19.750 --> 00:28:22.150 better or worse. Oh, for sure. It became an inherent 00:28:22.150 --> 00:28:24.410 assumption underlying the entire field of scientific 00:28:24.410 --> 00:28:26.869 management, pioneered by Frederick Winslow Taylor 00:28:26.869 --> 00:28:29.509 in the late 19th and early 20th centuries. The 00:28:29.509 --> 00:28:32.190 pursuit of maximum industrial efficiency. Through 00:28:32.190 --> 00:28:35.210 time and motion studies, yeah. Even Karl Marx, 00:28:35.369 --> 00:28:38.150 despite his fundamental disagreement with Babbage's 00:28:38.150 --> 00:28:41.130 capitalist motivations, he acknowledged the Babbage 00:28:41.130 --> 00:28:43.970 principle. What did Marx say? He noted that this 00:28:43.970 --> 00:28:46.089 division of labor was driven strictly by the 00:28:46.089 --> 00:28:48.430 pursuit of profitability and the degradation 00:28:48.430 --> 00:28:51.130 of individual craft, rather than an increase 00:28:51.130 --> 00:28:53.829 in overall productivity. And Babbage also used 00:28:53.829 --> 00:28:56.769 that same book as a platform for reform, didn't 00:28:56.769 --> 00:28:59.089 he? Exposing the restrictive practices of the 00:28:59.089 --> 00:29:01.329 book publishing industry. He did. He saw them 00:29:01.329 --> 00:29:03.910 as a cartel. and he fought for more transparent 00:29:03.910 --> 00:29:06.890 and fairer pricing structures. He was a data 00:29:06.890 --> 00:29:09.269 -driven reformer who targeted inefficiency wherever 00:29:09.269 --> 00:29:12.109 he saw it, mathematics, politics, or commerce. 00:29:12.490 --> 00:29:14.769 Let's shift now from economics to philosophy 00:29:14.769 --> 00:29:18.140 and theology. In 1837, Babbage published the 00:29:18.140 --> 00:29:20.740 Ninth Bridgewater Treatise. This sounds like 00:29:20.740 --> 00:29:22.539 he was picking a fight with the established religious 00:29:22.539 --> 00:29:24.859 scientific community. He was, intellectually. 00:29:25.180 --> 00:29:27.119 The original eight Bridgewater Treatises were 00:29:27.119 --> 00:29:29.740 commissioned to explore natural theology, the 00:29:29.740 --> 00:29:32.680 idea of proving God's existence and wisdom through 00:29:32.680 --> 00:29:35.359 the study of nature. And Babbage felt they weren't 00:29:35.359 --> 00:29:37.359 doing a good job. He felt the existing works 00:29:37.359 --> 00:29:40.200 failed to use modern science effectively. So 00:29:40.200 --> 00:29:42.599 what was Babbage's main theological argument? 00:29:42.880 --> 00:29:46.119 He argued strongly for uniformitarianism. the 00:29:46.119 --> 00:29:49.099 idea of a divine legislator who created the world 00:29:49.099 --> 00:29:52.200 through fixed natural laws. Babbage preferred 00:29:52.200 --> 00:29:54.960 this concept over the notion of a God who required 00:29:54.960 --> 00:29:57.799 continuous intervention or miracles to maintain 00:29:57.799 --> 00:30:00.920 creation. Why did a mechanical engineer prefer 00:30:00.920 --> 00:30:05.039 this model of God? Because it mirrored his own 00:30:05.039 --> 00:30:07.829 work. He believed in a creation where the initial 00:30:07.829 --> 00:30:10.809 programming, the laws of physics, was perfect 00:30:10.809 --> 00:30:13.390 and self -sustaining, operating predictably once 00:30:13.390 --> 00:30:15.769 set in motion. So studying science was a pure 00:30:15.769 --> 00:30:18.849 form of worship? In a way, yes. This meant that 00:30:18.849 --> 00:30:20.630 studying the works of the creator science and 00:30:20.630 --> 00:30:23.130 data offered a more satisfactory and robust proof 00:30:23.130 --> 00:30:25.549 of God's existence than evidence transmitted 00:30:25.549 --> 00:30:28.069 through human testimony, like scripture. Which 00:30:28.069 --> 00:30:31.049 he saw as subject to human fallibility. Exactly. 00:30:31.529 --> 00:30:34.089 like his dreaded error -ridden tables. He stressed, 00:30:34.309 --> 00:30:36.069 crucially, that science and scripture were not 00:30:36.069 --> 00:30:38.329 in conflict, but that science offered the more 00:30:38.329 --> 00:30:40.789 reliable, data -backed path to understanding 00:30:40.789 --> 00:30:43.589 the divine structure. That is the ultimate elevation 00:30:43.589 --> 00:30:47.230 of data over historical anecdote. And this philosophical 00:30:47.230 --> 00:30:49.970 treatise is where we find his most imaginative 00:30:49.970 --> 00:30:53.369 and profound concept, the library in the air. 00:30:53.690 --> 00:30:56.170 This is truly a beautiful and terrifying piece 00:30:56.170 --> 00:30:58.769 of poetic science. Explain it for us. Babbage 00:30:58.769 --> 00:31:01.970 proposed that because every spoken word or physical 00:31:01.970 --> 00:31:04.809 action causes atomic vibrations and disruptions 00:31:04.809 --> 00:31:07.309 in the air and in the environment, these effects 00:31:07.309 --> 00:31:10.029 are never truly lost. They are simply disseminated 00:31:10.029 --> 00:31:12.910 and recorded. He envisioned a complete, permanent, 00:31:13.029 --> 00:31:16.349 atomic record of human history. Exactly. He wrote 00:31:16.349 --> 00:31:18.829 that the air itself is one vast library on whose 00:31:18.829 --> 00:31:21.029 pages are forever written all that man has ever 00:31:21.029 --> 00:31:24.440 said or woman whispered. Wow. He conceived of 00:31:24.440 --> 00:31:26.619 an indelible record of every human action, a 00:31:26.619 --> 00:31:29.440 universal database of ethics and physics. It's 00:31:29.440 --> 00:31:31.720 an astonishing predecessor to our modern concerns 00:31:31.720 --> 00:31:33.740 about digital footprints and universal surveillance, 00:31:34.059 --> 00:31:36.980 framed as a theological certainty. That obsession 00:31:36.980 --> 00:31:39.759 with permanent, precise data also led him into 00:31:39.759 --> 00:31:42.319 the realm of codebreaking, another area where 00:31:42.319 --> 00:31:44.339 his genius was ahead of its public recognition. 00:31:44.700 --> 00:31:46.980 Right. Babbage was a proficient codebreaker, 00:31:47.180 --> 00:31:49.700 particularly during the Crimean War era in the 00:31:49.700 --> 00:31:52.920 1850s. He successfully broke both the visionary 00:31:53.400 --> 00:31:56.440 auto -key cipher and the simpler visionaire cipher. 00:31:56.579 --> 00:31:58.819 And for those unfamiliar with it, what was the 00:31:58.819 --> 00:32:00.819 visionaire cipher? The visionaire cipher was 00:32:00.819 --> 00:32:04.819 often called le chiffre indéchiffrable, the unbreakable 00:32:04.819 --> 00:32:07.519 cipher. Because it used a keyword. It used a 00:32:07.519 --> 00:32:10.559 keyword to shift letters, creating a very complex 00:32:10.559 --> 00:32:12.920 substitution that seemed impossible to crack 00:32:12.920 --> 00:32:15.619 without the key. Babbage's breakthrough involved 00:32:15.619 --> 00:32:18.680 recognizing that even with a shifting key, the 00:32:18.680 --> 00:32:20.420 patterns and the frequency of letter repetition 00:32:20.420 --> 00:32:22.619 could be detected using mathematical analysis. 00:32:23.279 --> 00:32:25.500 But his work was classified as a military secret. 00:32:25.799 --> 00:32:29.279 Never published. And so he lost credit. Tragically 00:32:29.279 --> 00:32:32.119 so. For well over a century, the credit for discovering 00:32:32.119 --> 00:32:34.640 the mathematical method for solving it was given 00:32:34.640 --> 00:32:37.019 to the Prussian officer Friedrich Kosinski, who 00:32:37.019 --> 00:32:39.119 made the discovery independently some years later. 00:32:39.359 --> 00:32:41.559 And Babbage's priority wasn't established until 00:32:41.559 --> 00:32:44.740 when? Not until 1985. That's when his original 00:32:44.740 --> 00:32:47.119 work was discovered, confirming another instance 00:32:47.119 --> 00:32:49.019 where his intellectual achievements just lay 00:32:49.019 --> 00:32:52.009 dormant for decades. Now let's pivot to perhaps 00:32:52.009 --> 00:32:55.069 the most peculiar and colorful element of his 00:32:55.069 --> 00:32:58.089 public life, his notorious lifelong campaign 00:32:58.089 --> 00:33:01.029 against public nuisances. This is Babbage the 00:33:01.029 --> 00:33:03.930 Eccentric, driven to distraction by imperfection 00:33:03.930 --> 00:33:06.420 and noise. Right. because he believed intellectual 00:33:06.420 --> 00:33:09.420 labor was paramount. Anything that disrupted 00:33:09.420 --> 00:33:12.299 it was treated as an economic catastrophe. He 00:33:12.299 --> 00:33:14.759 became infamous for his vehement campaigns against 00:33:14.759 --> 00:33:18.000 street noise, specifically targeting organ grinders. 00:33:18.099 --> 00:33:20.740 He viewed the organ grinder not as a charming 00:33:20.740 --> 00:33:23.480 nuisance but as a destructive force. Exactly. 00:33:23.740 --> 00:33:27.170 He argued that they inflicted Misery upon thousands 00:33:27.170 --> 00:33:29.849 of persons and the absolute pecuniary penalty 00:33:29.849 --> 00:33:32.450 imposed upon multitudes of intellectual workers 00:33:32.450 --> 00:33:35.210 by the loss of their time. So he saw the loss 00:33:35.210 --> 00:33:37.109 of an hour of his computational thought as a 00:33:37.109 --> 00:33:39.910 quantifiable, destructive economic event. He 00:33:39.910 --> 00:33:42.109 even meticulously documented this obsession, 00:33:42.410 --> 00:33:45.650 tallying 165 separate nuisance events over an 00:33:45.650 --> 00:33:47.829 80 -day period. He even took legal action against 00:33:47.829 --> 00:33:49.869 them, didn't he, earning him the nickname the 00:33:49.869 --> 00:33:52.269 Avenger of the Intellectuals. It's an amazing 00:33:52.269 --> 00:33:54.630 blend of high -minded principles and petty personal 00:33:54.630 --> 00:33:58.279 annoyance. And this obsession with quantifying 00:33:58.279 --> 00:34:01.549 the mundane extended to everything. My personal 00:34:01.549 --> 00:34:03.710 favorite anecdote involves his data collection 00:34:03.710 --> 00:34:07.089 on broken glass. Oh, this is great. In 1857, 00:34:07.349 --> 00:34:10.210 he published a literal table the relative frequency 00:34:10.210 --> 00:34:12.489 of the causes of breakage of plate glass windows. 00:34:12.849 --> 00:34:15.090 A table just for broken windows. A meticulous 00:34:15.090 --> 00:34:18.530 table. He categorized the cause of 464 broken 00:34:18.530 --> 00:34:21.889 panes. He noted which were caused by hailstones, 00:34:21.949 --> 00:34:25.030 which by stones thrown by children, which by 00:34:25.030 --> 00:34:28.090 carts. And my favorite detail. And in a classic 00:34:28.090 --> 00:34:30.070 Babbage detail, he recorded that 14 of the... 00:34:30.059 --> 00:34:32.500 those pains were caused specifically by drunken 00:34:32.500 --> 00:34:35.420 men women or boys he couldn't help himself every 00:34:35.420 --> 00:34:38.219 event no matter how random was a data point awaiting 00:34:38.219 --> 00:34:41.099 analysis before we wrap up this polymath section 00:34:41.099 --> 00:34:43.539 let's quickly acknowledge his other non -computing 00:34:43.539 --> 00:34:45.579 inventions that had a direct practical impact 00:34:45.579 --> 00:34:48.639 right he was a genuine mechanical innovator outside 00:34:48.639 --> 00:34:52.269 the calculating world Around 1838, he invented 00:34:52.269 --> 00:34:54.650 the pilot, what Americans call the cow catcher. 00:34:54.690 --> 00:34:57.329 The V -shaped metal frame on the front of locomotives. 00:34:57.590 --> 00:34:59.489 Designed to clear the track of obstacles like 00:34:59.489 --> 00:35:02.989 stray livestock or debris, it drastically increased 00:35:02.989 --> 00:35:05.949 railway safety. And in the medical field. He 00:35:05.949 --> 00:35:08.130 invented the ophthalmoscope, the device still 00:35:08.130 --> 00:35:10.829 used by doctors today to examine the interior 00:35:10.829 --> 00:35:13.489 of the eye. But he never got credit for it at 00:35:13.489 --> 00:35:15.849 the time. He gave his prototype to a doctor named 00:35:15.849 --> 00:35:18.909 Thomas Wharton Jones for testing, who unfortunately 00:35:18.909 --> 00:35:21.699 ignored it. It fell into obscurity until it was 00:35:21.699 --> 00:35:24.099 independently reinvented and popularized by Hermann 00:35:24.099 --> 00:35:26.460 von Helmholtz. Once again, Babbage was right 00:35:26.460 --> 00:35:28.820 and years ahead of the curve. You see the pattern. 00:35:29.960 --> 00:35:32.460 He invented the conceptual framework for modern 00:35:32.460 --> 00:35:35.300 computing, the first computer printer, a key 00:35:35.300 --> 00:35:38.639 railway safety device, a major diagnostic medical 00:35:38.639 --> 00:35:41.900 tool, formalized a fundamental principle of industrial 00:35:41.900 --> 00:35:44.980 economics, and broke the unbreakable code all 00:35:44.980 --> 00:35:48.139 while battling itinerant street musicians. That 00:35:48.139 --> 00:35:51.139 is a life of boundless intellectual energy. Absolutely. 00:35:51.139 --> 00:35:53.940 Charles Babbage died in 1871 in London, having 00:35:53.940 --> 00:35:56.840 spent over 40 years fighting for his grand, never 00:35:56.840 --> 00:36:00.079 -finished mechanical visions. We have one unique 00:36:00.079 --> 00:36:02.840 and rather macabre final fact about his physical 00:36:02.840 --> 00:36:05.500 legacy that we need to share. Yes, the persistence 00:36:05.500 --> 00:36:08.239 of his family in documenting his life is remarkable. 00:36:08.579 --> 00:36:11.400 His original autopsy report was actually discovered 00:36:11.400 --> 00:36:14.719 and published in 1983 by his great -great -grandson. 00:36:14.880 --> 00:36:17.320 Which is incredible. But the most striking physical 00:36:17.320 --> 00:36:19.960 memorial is the preservation of his mind itself. 00:36:20.480 --> 00:36:23.309 That's right. A portion of Babbage's brain is 00:36:23.309 --> 00:36:26.090 preserved at the Hunterian Museum, and the other 00:36:26.090 --> 00:36:29.269 half is on display at the Science Museum in London. 00:36:29.550 --> 00:36:32.409 It's an incredibly fitting yet unsettling tribute. 00:36:32.929 --> 00:36:36.289 A physical memorial to a man whose greatest achievements 00:36:36.289 --> 00:36:39.289 were entirely conceptual and intellectual. They 00:36:39.289 --> 00:36:41.650 really were. However, the conceptual legacy, 00:36:41.750 --> 00:36:44.130 of course, is what truly endures. His impact 00:36:44.130 --> 00:36:46.369 is everywhere. The Charles Babbage Institute 00:36:46.369 --> 00:36:49.050 is a major archive and research center for the 00:36:49.050 --> 00:36:51.760 history of computing. His name was given to a 00:36:51.760 --> 00:36:54.880 1970s programming language. And he remains an 00:36:54.880 --> 00:36:57.780 iconic figure in steampunk fiction. Because his 00:36:57.780 --> 00:37:00.800 brass, steam -driven vision of computing is so 00:37:00.800 --> 00:37:03.219 aesthetically compelling, the future envisioned 00:37:03.219 --> 00:37:06.159 through the mechanics of the past. So if we step 00:37:06.159 --> 00:37:08.900 back and summarize the key takeaways, Babbage's 00:37:08.900 --> 00:37:11.139 life is defined by this fundamental conflict. 00:37:11.579 --> 00:37:14.739 He was the engineer whose vast mechanical visions 00:37:14.739 --> 00:37:18.260 just outpaced 19th century manufacturing and 00:37:18.260 --> 00:37:20.809 government funding. Yet whose designs laid the 00:37:20.809 --> 00:37:23.570 complete, functional, conceptual framework for 00:37:23.570 --> 00:37:26.949 modern general purpose computation. His belief 00:37:26.949 --> 00:37:29.429 system, derived from his mathematical passion, 00:37:29.750 --> 00:37:33.090 was driven by a powerful, almost religious belief 00:37:33.090 --> 00:37:36.670 in precision, the sanctity of data, and the absolute 00:37:36.670 --> 00:37:39.389 necessity of eliminating human error from the 00:37:39.389 --> 00:37:42.130 record. He believed in a world governed by predictable, 00:37:42.429 --> 00:37:45.809 God -given natural law, operating without divine 00:37:45.809 --> 00:37:48.349 intervention once it was set in motion. And he 00:37:48.349 --> 00:37:51.110 proposed the library in the air, a permanent 00:37:51.110 --> 00:37:53.869 atomic record of all human actions, implying 00:37:53.869 --> 00:37:55.929 that every choice had an unavoidable objective 00:37:55.929 --> 00:37:58.650 and permanent consequence. He was above all an 00:37:58.650 --> 00:38:01.550 architect of certainty in an age of analog uncertainty. 00:38:01.829 --> 00:38:04.409 So given Babbage's lifelong drive to mechanize 00:38:04.409 --> 00:38:06.449 knowledge and ensure this high degree of precision, 00:38:06.730 --> 00:38:08.869 we are left with a final provocative thought 00:38:08.869 --> 00:38:11.630 for you, the listener, to mull over. If Charles 00:38:11.630 --> 00:38:14.750 Babbage, the relentless quantifier and purist 00:38:14.750 --> 00:38:17.630 of data, were alive today, which side of the 00:38:17.630 --> 00:38:19.610 computing revolution would capture his attention 00:38:19.610 --> 00:38:22.829 and his passion most profoundly? Would he be 00:38:22.829 --> 00:38:26.369 utterly fascinated by the physical reality, the 00:38:26.369 --> 00:38:29.539 fulfillment of his engineering vision? The powerful 00:38:29.539 --> 00:38:32.380 microchip driven computers, the terabytes of 00:38:32.380 --> 00:38:35.019 memory, the massive processing power built directly 00:38:35.019 --> 00:38:38.159 upon his mill and store concepts, finally realizing 00:38:38.159 --> 00:38:40.760 the speed and precision he dreamed of. Or given 00:38:40.760 --> 00:38:43.039 his obsession with error elimination and his 00:38:43.039 --> 00:38:45.559 concept of the permanent record, would he be 00:38:45.559 --> 00:38:47.920 horrified and philosophically challenged by the 00:38:47.920 --> 00:38:50.320 ethical implications of the constant, overwhelming 00:38:50.320 --> 00:38:53.219 and potentially error filled flood of data that 00:38:53.219 --> 00:38:55.619 humanity now digitally generates and records 00:38:55.619 --> 00:39:00.179 every single second? misinformation, the algorithmic 00:39:00.179 --> 00:39:02.679 bias, the noise. That's the question Babbage's 00:39:02.679 --> 00:39:05.760 rigorous yet unfulfilled life poses for our hyper 00:39:05.760 --> 00:39:08.579 -digital data -drenched age. A truly enduring 00:39:08.579 --> 00:39:10.659 dilemma from the man who gave us the machine. 00:39:10.860 --> 00:39:12.159 We'll catch you on the next Deep Dive.