Brian, for his part, thinks of writing as a kind of blacksmithing, where it takes a while just to heat up the metal before it’s malleable. He finds it somewhat useless to block out anything less than ninety minutes for writing, as nothing much happens in the first half hour except loading a giant block of “Now, where was I?” into his head. Scheduling expert Kirk Pruhs, of the University of Pittsburgh, has had the same experience. “If it’s less than an hour I’ll just do errands instead, because it’ll take me the first thirty-five minutes to really figure out what I want to do and then I might
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