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🗓️ 3 April 2025
⏱️ 74 minutes
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0:00.0 | What was Darwin's strangest idea? |
0:04.2 | Sexual selection by mate choice is the idea that Darwin had alongside natural selection |
0:10.2 | and which he maintained was a very different process. |
0:13.4 | Almost nobody agreed with him in his lifetime. |
0:15.5 | It was a failure in the sense that he couldn't persuade people that this was an important thing. |
0:21.3 | And when people did agree with him, they thought, well, yeah, but it's just a small niche thing in the corner of biology. |
0:27.3 | And I don't think that's right. |
0:28.5 | I think he was onto something that actually when mates are selective, which they are in many species, |
0:33.7 | it drives a huge amount of evolution in the other sex, and it's a very different process from natural selection. |
0:39.5 | I call it the fun version of evolution because it produces loud songs and things like that. |
0:45.6 | It's less utilitarian. |
0:48.1 | Yeah. |
0:48.8 | What was the reaction when Darwin first proposed sexual selection? |
0:58.2 | Well, he mentioned the idea in the origin of species very briefly, and he said, I think that he had a friend called Sir John Seabright, |
1:05.3 | who'd been breeding rather beautiful bantam, new varieties of bantoms. And he said, |
1:10.6 | if a man can produce a beautiful bantam in a short |
1:13.8 | time, then why can't a female produce a beautiful male in over a thousand generations? And he was |
1:20.5 | ridiculed for it. And by the time of the fourth edition of the origin of species, he felt it |
1:25.2 | necessary to put in a sentence saying, yeah, look, they are |
1:30.0 | beautiful, these male birds, to us, but that doesn't mean they were put on earth to please us. |
1:37.3 | They could have been put on earth to please females. |
1:39.4 | And this made things worse because everyone else said, I'm sorry, are you suggesting that female birds |
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