Clearly, an open mind is a necessity when dealing with randomness. Popper believed that any idea of Utopia is necessarily closed owing to the fact that it chokes its own refutations. The simple notion of a good model for society that cannot be left open for falsification is totalitarian. I learned from Popper, in addition to the difference between an open and a closed society, that between an open and a closed mind.

In the complex world, the notion of “cause” itself is suspect; it is either nearly impossible to detect or not really defined — another reason to ignore newspapers, with their constant supply of causes for things.

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When I went to finance, I discovered that those who *tawk* about money were the ones who didn't have it, couldn't make it, or wanted a lot more but couldn't get it. Same problem with IQ. Those who insist on measuring IQ are ... the most stupid.

The antifragile loves randomness and uncertainty, which also means — crucially — a love of errors, a certain class of errors. Antifragility has a singular property of allowing us to deal with the unknown, to do things without understanding them — and do them well. Let me be more aggressive: we are largely better at doing than we are at thinking, thanks to antifragility. I’d rather be dumb and antifragile than extremely smart and fragile, any time.