Stumbled on this today useful background on the most overused "fact" in training.
Embeds this wisdom, which I like a lot: "Solutions are not one size fits all—they are, in fact, maddeningly bespoke. That’s because neither problems nor people are fungible. Rosenberg is a brilliant reporter, but here she exhibits the characteristic blind spot of the blind-spot-obsessed Big Idea books. Like totalizing religious or political stories, these books promise to hand over the master key that will unlock our lives. Or, more precisely, they tell us that we have had the key all along, but that we have been holding it upside down."
Reflections on the power of rehearsal, from a master performer