1 00:00:15,966 --> 00:00:19,169 OK, now though the last thing that I'm 2 00:00:19,169 --> 00:00:21,371 going to tell you about is why this matters. 3 00:00:21,371 --> 00:00:24,975 And just like the goody bags, when I started teaching class 4 00:00:24,975 --> 00:00:29,379 three years ago, I wanted to also protect 5 00:00:29,379 --> 00:00:32,816 a certain fundamental part of each lecture. 6 00:00:32,816 --> 00:00:35,485 And I call it my why this matters moment. 7 00:00:35,485 --> 00:00:38,755 Sometimes it goes on for more than a moment. 8 00:00:38,755 --> 00:00:41,725 But I really, really want every lecture 9 00:00:41,725 --> 00:00:46,196 to connect what we just learned to a big picture. 10 00:00:46,196 --> 00:00:47,831 Most of the time, it's some application 11 00:00:47,831 --> 00:00:50,400 or some global challenge. 12 00:00:50,400 --> 00:00:53,670 Right I want you to see those connections, 13 00:00:53,670 --> 00:00:55,572 that what you're learning is directly 14 00:00:55,572 --> 00:00:58,975 relevant to some big thing. 15 00:00:58,975 --> 00:01:01,845 So my why this matters moment is really related 16 00:01:01,845 --> 00:01:04,748 to these discoveries themselves. 17 00:01:04,748 --> 00:01:06,549 Please give me till 11:55. 18 00:01:06,549 --> 00:01:08,685 I will always let you go on time, 11:55. 19 00:01:08,685 --> 00:01:10,387 But please don't start putting stuff away 20 00:01:10,387 --> 00:01:12,455 because it's distracting to everybody. 21 00:01:12,455 --> 00:01:13,723 So two and a half minutes. 22 00:01:16,826 --> 00:01:21,564 We name the age we live in often by the element, by the atom, 23 00:01:21,564 --> 00:01:25,435 by the material, by the material that 24 00:01:25,435 --> 00:01:28,705 was most useful at the time. 25 00:01:28,705 --> 00:01:32,342 The Stone Age, the Bronze Age, the Iron Age. 26 00:01:32,342 --> 00:01:34,577 I would say we've moved through the industrial age, 27 00:01:34,577 --> 00:01:36,880 the age of plastics, the age of silicon. 28 00:01:36,880 --> 00:01:39,616 As a material scientist and engineer, I love this. 29 00:01:39,616 --> 00:01:43,086 I love that you name the age you live in by the material that 30 00:01:43,086 --> 00:01:44,253 mattered. 31 00:01:44,253 --> 00:01:49,125 But I also love that we will never do that again, ever. 32 00:01:49,125 --> 00:01:52,195 And the reason is that we live in a truly unique age now, 33 00:01:52,195 --> 00:01:55,932 a different age, one in which we can put atoms, 34 00:01:55,932 --> 00:02:00,170 we can realize Feynman's dream and put atoms anywhere we want. 35 00:02:00,170 --> 00:02:04,474 The question is not, can we make it as much 36 00:02:04,474 --> 00:02:07,210 any more as it is, what should we make? 37 00:02:07,210 --> 00:02:10,913 We live in the age of atomic design. 38 00:02:10,913 --> 00:02:12,148 And that is really important. 39 00:02:12,148 --> 00:02:16,152 And I mentioned the phone and the 63 elements. 40 00:02:16,152 --> 00:02:19,923 You know, look, this is called a revolution. 41 00:02:19,923 --> 00:02:22,926 This is called a revolution. 42 00:02:22,926 --> 00:02:27,030 You went in 50 years from \$1 per transistor, 43 00:02:27,030 --> 00:02:29,999 eight orders of magnitude cheaper. 44 00:02:29,999 --> 00:02:34,504 In 2012, it became cheaper to print a transistor on a chip 45 00:02:34,504 --> 00:02:37,774 than a character in a newspaper. 46 00:02:37,774 --> 00:02:39,709 That's a revolution but that revolution, 47 00:02:39,709 --> 00:02:42,011 it started as a processing revolution 48 00:02:42,011 --> 00:02:45,014 with one really important element, silicon. 49 00:02:45,014 --> 00:02:49,819 And now it's a materials revolution, with 63. 50 00:02:49,819 --> 00:02:52,322 It's a chemistry revolution. 51 00:02:52,322 --> 00:02:56,192 And the reason this matters so much, what are these things, 52 00:02:56,192 --> 00:03:00,730 is because so many of the problems that we face 53 00:03:00,730 --> 00:03:04,601 in this world today, so many of the global challenges, 54 00:03:04,601 --> 00:03:10,006 will rely on new chemistry and on new materials. 55 00:03:10,006 --> 00:03:12,275 Those are the bottlenecks. 56 00:03:12,275 --> 00:03:14,377 Those are the bottlenecks in costs, in efficiency, 57 00:03:14,377 --> 00:03:17,313 in processing, in properties. 58 00:03:17,313 --> 00:03:18,681 And those are the kinds of things 59 00:03:18,681 --> 00:03:21,351 that we're going to be talking about all throughout the fall. 60 00:03:21,351 --> 00:03:24,353 And that is our construction set. 61 00:03:24,353 --> 00:03:27,790 And we will build this on Friday. 62 00:03:27,790 --> 00:03:29,591 So see you guys all on Friday. 63 00:03:29,591 --> 00:03:29,659 [INTERPOSING VOICES]