[hnick]

I've thought about this and come to the conclusion that the ambitious man/town/society down the road is the problem. You can hunt and gather all you want, but societies build technology and excess manpower and one day they will come along and ruin your day.

You see this to a lesser degree within society itself or even within a single workplace, where those few who are eager to over-extend with unpaid overtime ruin it for the rest of us!