4.7 • 4.6K Ratings
🗓️ 28 June 2025
⏱️ 82 minutes
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0:00.0 | How do you describe the central thread of your work over the years? |
0:06.2 | Well, I'm retired now, so the thread has sort of changed direction. But when I was a scientist, |
0:13.0 | I call myself a superannuated scientist now. But when I was working in the lab, I worked on the |
0:19.9 | problem of speciation or the origin of species, |
0:23.5 | which is, of course, the title of Darwin's 1859 book. |
0:28.0 | And it's a problem that Darwin didn't solve. |
0:31.1 | So that's why I took it up when I was a graduate student. |
0:34.5 | I think we know a lot more now. |
0:36.1 | We certainly, Darwin knew almost nothing about |
0:38.7 | species. So it calls the origin of species. He's a bit of a misnomer. He could call it the |
0:44.7 | origin of adaptations, which might be a natural selection. But in terms of species, that is the |
0:51.6 | lumpiness of nature, the fact that creatures are not a spectrum, |
0:56.5 | but they're discrete, more or less discrete entities. |
0:59.6 | That's the problem with Darwin to solve, and that's the problem I was working on. |
1:03.9 | Right. |
1:04.4 | How do you, what's the layman's description of speciation? |
1:08.6 | Well, are you talking about how it happens or how I define it? Give us both. |
1:14.7 | Well, the definition is simply the species as the origin of species. If you look at nature, |
1:22.6 | as I said, you don't find that it's a continuum all the way from bacteria to, you know, humans. |
1:29.6 | But that's not a hierarchy. |
1:31.4 | That's just what people perceive as a hierarchy. |
1:34.6 | It's lumpy. |
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