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> Iguanas are at the mercy of evolution. We aren't. Given enough time, every species evolves. Now, the twist is that the human species could alter its own.
by Hoasi 6y ago
> Iguanas are at the mercy of evolution. We aren't.
Given enough time, every species evolves. Now, the twist is that the human species could alter its own.
- marcusverus 6y agoIs this necessarily the case? How can a species evolve without natural selection (the engine of evolution)? If you don't have natural selection acting as a 'fitness filter', how could a species change in any coherent way? It seems like genetic diversity would increase, but it's not clear to me that, when ~95.4% of a species survives to adulthood, there is any pressure that could push the whole species (or even a subset of it) in a given direction.[0] [0]https://ourworldindata.org/child-mortality https://ourworldindata.org/child-mortality