How hesitation is a fundamental brain feature, according to neuroscientists

At the Winter Olympics, skiers, bobsledders, speedskaters, and many other athletes all have to master one critical moment: when to start. That split second is paramount during competition because when everyone is strong and skilled, a moment of hesitation can separate gold from silver. A competitor who hesitates too much will be left behind—but moving too early will get them disqualified.

Though the circumstances are less intense, this paradox of hesitation applies to daily life. Waiting for the right moment to cross the street...