You know what danger looks like: A whirling saw blade. An enraged pit bull lunging against a chain-link fence. A fallen electrical cable, bare metal sparking on wet pavement: Some kinds of danger are so overt that they seem to radiate a palpable sense of menace. Just to be near them is to be on high alert.
Evidently some dangers aren’t obvious enough, though. Even in an age in which EMTs and emergency room doctors are capable of saving all but the most grievously injured, accidents kill 120,000 Americans a year. It’s the third most common cause of death among American men between the ages of 18 and 65.
It’s tempting to label accident victims as careless or stupid, the losers in life’s ongoing game of Darwinian selection. I would never do that we tell ourselves, when we hear about someone else’s fatal error. Believing that is a way of insulating ourselves from the reality of life’s terrifying fragility. In fact the world is filled with all kinds of dangers, and many of them aren’t as obvious as sparking cables or whirling blades. Perfectly sane and reasonable people fall victim all the time.
What makes some potentially lethal threats sneakier than others? It has to do with the way the brain processes danger. Read the rest of this entry »