I actually figured out the problem with traveling back in time (besides the actual time travel) and getting a caveman to write a constitution. First of all we would not be able to communicate so we'd have to figure that out, than I'd have to teach them english and how to write, than I'd have to convince them that a constitution would be beneficiary to their society. And while not impossible, just more effort than I want to expend.
Perfectly robust chickens Run laps a lot Pee on the garden Leap over fences Cock is a word for rooster Hen is a type of chicken? Kit kats are good Nice chickens don't belong in the Zoo