Versatility in inverting things, the ability to explore and explain things by looking at them from opposite directions. Inversatility was fundamental to Einstein and Darwin's breakthroughs, and the breakthroughs that gave us a way to measure information (bits and bites) and our understanding of what's going on with whirlpools and chain reactions. 

It's also a great way to innoculate yourself against gullible swooning over memes and moral principles. 

My research team also suggests that inversatility also affords us a big breakthrough in explaining the difference between living, means-to-ends effort, and nonliving cause-and-effect phenomena. In other words, inversatility may give us a way to explain in strictly chemical terms how life started and what selves and aims really are.