It's precisely what makes humanity strong.
When humans divide into groups, we also devide our losses. If the idea of jumping off a cliff is presented to humanity, some will do it, but not all. Those jumping will inspire others to do it, and the second generation of jumpers will divide themselves into different jump-types, some will jump with primitive wings, some with liana's and some with large sheets, and through a lot of jumping off a cliff humanity gained the aeroplanes, the bungyjump and the parachute.
conceptual evolution baby :D