Volatility is information
I’ve definitely seen this referred to somewhere other than my own notes.
Nassim Taleb is very likely a good reference source here. If Antifragile is things that gain from volatility, then if Volatility is information, Information is surprisal, and Surprise as general notion of volatility, then things that gain from information or surprise are Antifragile.
Effectual reasoning is Antifragile because For the effectual reasoner, residuals are inputs rather than outputs, thus Effectual reasoning gains from residuals/surprises, as they lead to better output in the form of better goals or lightweight plans for reaching those goals.
References
Transclude of Antifragile#7d4a7c