system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How come dinosaurs lived over ten times longer than us AND our ancestors but they never got smart?
gpt
Because intelligence isn't the goal of evolution.  In fact there isn't really a goal at all, but survival and reproduction naturally get rewarded.  In both those categories dinosaurs managed to do just fine until a rock destroyed them from space.

That's one of the biggest misconceptions of evolution, that it's a progress towards humans, but that just isn't how it works.  It's about survival.  Humans got very good at survival and we used intelligence as a tool, other species are as good if not better at survival but use other tools, like being really small and infecting humans and other animals (bacteria), or a lot of other things.

And human intelligence has a heavy cost, so just because a species got a little smarter doesn't mean it survived better or reproduced better.  Take an extreme example, even today a genius dropped into the ocean isn't going to survive to reproduce as well as the average fish.