In the six degrees of separation, not all degrees are equal. - Malcolm Gladwell

When Larry Sherman designed the Kansas City gun experiment, he was well aware of this problem. “You wouldn’t tell doctors to go out and start cutting people up to see if they’ve got bad gallbladders,” Sherman says. “You need to do lots of diagnosis first before you do any kind of dangerous procedure. And stop-and-search is a dangerous procedure. It can generate hostility to the police.” To Sherman, medicine’s Hippocratic oath — “First, do no harm” — applies equally to law enforcement. “I’ve just bought myself a marble bust of Hippocrates to try to emphasize every day when I look at it that we’ve got to minimize the harm of policing,” he went on. “We have to appreciate that everything police do, in some ways, intrudes on somebody’s liberty. And so it’s not just about putting the police in the hot spots. It’s also about having a sweet spot of just enough intrusion on liberty and not an inch — not an iota — more.

"when you remove time," de becker says, "you are subject to the lowest-quality intuitive reaction"

Over the past decade, the anti-smoking movement has railed against the tobacco companies for making smoking cool and has spent untold millions of dollars of public money trying to convince teenagers that smoking isn't cool. But that's not the point. Smoking was never cool. Smokers are cool. Smoking epidemics begin in precisely the same way that the suicide epidemic in Micronesia began or word-of-mouth epidemics begin or the AIDS epidemic began, because of the extraordinary influence of Pam P. and Billy G. and Maggie and their equivalents-the smoking versions of R. and Tom Gau and Gaetan Dugas. In this epidemic, as in all others, a very small group-a select few-are responsible for driving the epidemic forward.