system
Given the following post, respond as if you're commenting on Reddit:
human
If the major event that triggered the extinction of the dinosaurs never happened, could they have evolved to our level of intelligence?
gpt
That is in fact one of the biggest puzzles in the speculation about extraterrestial life. For us humans, being intelligent seems to be a pretty neat trick in the survival of the fittest. So why is everything else so dumb? As far as we know, we are the only intelligent civilized species in the history of life on earth. Which is *long*: 3.8 billion years is the best guess now. 

There are  three possible answers to this:

a) We only find intelligence important because *we* have it. Elephants (if they were intelligent) would probably wondering why there are no other land creatures with trunks, despite trunks obviously being useful and beautiful. 

b) It *did* evolve, but geological time just bulldozered over it. A dinosaur civilization with agriculture, oral traditions and the habit of burying its members with flowers would be pretty darn intelligent by our standards. But our chances of finding those dinos are small, let alone our chances of finding out about their intelligence. 

c) This one actually borders on (a): intelligence is not that big a deal. Every other animal on the planet seems to cope just fine without it. Dinos had already existed for millions of years without big brains, why would they suddenly start making them now?