system
A chat on subreddit /r/NoStupidQuestions
human
One of best lines on the subject I have read - it was a couple years ago in an article criticizing the term 'anthropocene' and saying how humans grossly overestimate their influence on the world, was something like 'even if dinosaurs had highly complex civilizations and waged nuclear warfare against each other, odds of us getting evidence of that are very slim'.  Tens/hundreds of millions of years ago is a very long time, and the whole world looks different now, continental plate movements and all that...

Based on their anatomy as we know it today it's unlikely, but also so many dinosaurs have been recreated off literally a handful of bones, not entire skeletons, what we do know is mostly speculative.
gpt
&gt;even if dinosaurs had highly complex civilizations and waged nuclear warfare against each other, odds of us getting evidence of that are very slim

Blatantly wrong. If bone and tissue, completely organic materials, have survived millions of years, complex structures would've at the very least, left vestiges.

Also, anatomy. We have a pretty accurate idea of how dinosaurs used to look, and none of them had the dexterity required to even use basic tools.