Why does making a thing with your hands change how you think about yourself?
Matthew Crawford · Shop Class as Soulcraft · 2009
P · Argument, not measurement
Crawford argues that manual work with a real object provides a kind of agency and reality-testing that abstract work does not: the object resists, and resistance is information. The claim is philosophical and biographical, not experimental. It is included because it names a mechanism the empirical literature rarely measures: feedback that cannot be argued with.
ProbePick one task with an external check this week: something that can be wrong in a way you cannot talk your way out of. Record how long you spent before checking.