as you become skilled in a task, its demand for energy diminishes. studies of the brain have shown that the pattern activity associated wwith an aciton changes as skill increases, with fewer brain regions involved. talent has similar effects. highly intelligent individuals need less effort to solve the same problems, as indicated by both pupil size and brain activity. a general law of least effort applies to cognitive as well as physical exertion. the law assets that if there are several ways of achieving the same goal, people will eventually gravitate to the least demanding course of action. in the economy of action, effort is a cost, and the acquisition of skill is driven by the balance of benefits and costs. laziness is built deep into our nature.
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