Comment by vintermann

Sure, you can go in to kill everyone, and sometimes they did, but only when they were OK with almost as many of their own group dying as the enemy. There's no big technological or tactical advantage to be had in the stone age. Maybe, if you're really lucky, only one of you die for every two of theirs?

(Attacking them in their beds, pah, don't you think maybe the neighboring tribe thought about that and had someone on watch?)