Antifragile

Much of what other people know isn't worth knowing.

Take the situation in which you have a lot to lose and little to gain. If an additional quantity of wealth, say, a thousand Phoenician shekels, would not benefit you, but you would feel great harm from the loss of an equivalent amount, you have an asymmetry. And it is not a good asymmetry: you are fragile.

kept the good and ditched the bad; cut the downside and kept the upside. Self-servingly, that is, by eliminating the harm from the fate and unphilosophically keeping the upside.

If you have more to lose than to benefit from events of fate, there is an asymmetry, and not a good one.

Fragility implies more to lose than to gain, equals more downside than upside, equals (unfavorably) asymmetry.
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Antifragility implies more to gain to lose, equals more upside than downside, equals (favorable) asymmetry.