Elon Musk thinks this is too much for most humans to bear. Most startup companies fail.

Odds are, a startup launched today will fail. In fact, three out of four venture-backed companies don’t return investors’ capital, and half of all new businesses close their doors before they’ve been open five years.

Failure is a constant in entrepreneurship. But…is it something the human brain is actually equipped, evolutionarily speaking, to deal with? Prolific inventor and serial entrepreneur Elon Musk, speaking last week at the New York Times Dealbook conference in New York City…