Fragile organizations and systems break from randomness. Robust ones are able to resist and stay strong. But Antifragile ones actually benefit from randomness and volatility.
I highly recommend the book -- it's highly relevant to startup companies who, rather than shooting for the moon, should protect their downside (at first) and place small bets on numerous 10x activities.
However, I was unable to gain any insight into how that applied to typical situations, e.g. investing, career choices, romantic relationships, home purchasing. That is, beyond "do these things in an antifragile way, not a fragile way."
Example: he does not recommend the standard investment strategy of purchasing stock funds and bond funds at a ratio that approximates your tolerance for risk. This is, for some reason, fragile. He recommends putting most of your money into the safest investments available on the market, with the rest of your money going into the riskiest moonshots you can find. This is, for some reason, antifragile. "Unimportant" questions like why and how these strategies are classified as fragile/antifragile and what kinds of investments he considers appropriately safe are left as an exercise to the reader.
I genuinely can’t understand how anyone could have made it through that book.