Goat in Goats

It's said there's a economic theory about goat in the goats.

When a group of goats are running to one bad direction, a goat of them have two option:
1. turn back, and is overrided by others.
2. follow the group, and goes bad finally.

So it sounds the action of one goat are useless here. We need external strength on the adjustment of the group.