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200M years ago you had dinosairs, they were significantly dumber than mammals. 400M years ago you had fish and arthropods, even dumber than dinosaurs. Brain s
by Jensson 2y ago
200M years ago you had dinosairs, they were significantly dumber than mammals.
400M years ago you had fish and arthropods, even dumber than dinosaurs.
Brain size grows as intelligence grows, the smarter you are the more use you have for compute so the bigger your brain gets. It took a really long time for intelligence to develop enough that brains as big as mammals were worth it.
- HarHarVeryFunny 2y agoBig brain (intelligence) comes at a huge cost, and is only useful if you are a generalist. I'd assume that being a generalist drove intelligence. It may have started with warm bloodedness and feathers/fur and further boosted in mammals with milk production (& similar caring for young by birds) - all features that reduce dependence on specific environmental conditions and therefore expose the species to more diverse environments where intelligence becomes valuable.