Violence... did anyone notice?
The first season they couldn't be hurt, but the second season they dropped all the Phd's and Engineers. Season 2 picked up a bunch of carpenters and poor people to beat the piss out of. Don't get me wrong, season 2 is better, but it getting bear sprayed every other day would suuuuuuucckkk!
Tough times don't last. Tough people do.