That's not a spider, it's a rolly-polly...
Well, trilobites probably were smarter than anything that came before them.
I maintain a fantasy that somewhere around a black smoker, there is a small residual population of trilobites. That would be so fucking awesome.
They wouldn't extinguish their cigarettes, so they were extinguished? ;-D
They came that the galaxy might have life, and have it more abundantly...;-)
Yeah, the laws of robotics always need a 4th, 5th, etc...