Only in a society of great diversity, where there are people who feel secure in specialising in unique abilities, can new heroes arise in relation to a wide variety of changes in the environment; evolution can only function well when there is such diversity. As such, a diverse and cooperative society will suffer less during periods of adversity and recover faster. A "monoculture" of educational outcomes is thus more vulnerable in challenging times. To unexpected problems will arise unexpected solutions from unexpected heroes whom had talents that were previously less useful.