My grandmother's heuristic: if people eat the same they look the same... and have similar genetic makeup - Nassim Nicholas Taleb

An idea stats to be interesting when you get scared of taking it to its logical conclusion.

The only people who think that real world experience doesn't matters are those who never had real world experience.

Optimism, it is said, is predictive of success. ...It can also be predictive of failure. Optimistic people... take more risks as they are overconfident of the about the odds; those who win show up among the rich and famous, others fail and disappear from the analysis.