If the species is already dominating the environment then the pressure from the first component compared to the second decreases.
I agree with this. However I don’t think humans had nearly sufficient slack for most of history. I don’t think they dominated the environment up until 20000years [1]ago or so, and I think most improvements in intelligence come from earlier.
That’s why I’m attributing the level of human intelligence in large part to runaway sexual selection. Without it, as soon as interspecies competition became the most important for reproductive success, natural selection would not push for even grater intelligence in humans, even though it could improve our ability to dominate the environment even more.
I’m definitely not saying that group selection lead to intelligence in humans (only that group selection would’ve removed it over long timescales if it wasn’t useful). However I think that there were (through basically all of human history) significant individual fitness benefits from being smarter that did not come from outwitting each other, e.g. being better able to master hunting techniques and thereby gaining higher status in the tribe.
I agree with this. However I don’t think humans had nearly sufficient slack for most of history. I don’t think they dominated the environment up until 20000years [1]ago or so, and I think most improvements in intelligence come from earlier.
I’m definitely not saying that group selection lead to intelligence in humans (only that group selection would’ve removed it over long timescales if it wasn’t useful). However I think that there were (through basically all of human history) significant individual fitness benefits from being smarter that did not come from outwitting each other, e.g. being better able to master hunting techniques and thereby gaining higher status in the tribe.
Or could also be 100k years, idk