How you feel about your abilities — your academic “self-concept” — in the context of your classroom shapes your willingness to tackle challenges and … - Malcolm Gladwell

In Boston right around the same time, another criminologist did a similar study: Half the crime in the city came from 3.6 percent of the city’s blocks. That made two examples. Weisburd decided to look wherever he could: New York. Seattle. Cincinnati. Sherman looked in Kansas City, Dallas. Anytime someone asked, the two of them would run the numbers. And every place they looked, they saw the same thing: Crime in every city was concentrated in a tiny number of street segments. Weisburd decided to try a foreign city, somewhere entirely different — culturally, geographically, economically. His family was Israeli, so he thought Tel Aviv. Same thing. “I said, ‘Oh my God. Look at that! Why should it be that five percent of the streets in Tel Aviv produce fifty percent of the crime? There’s this thing going on, in places that are so different.’” Weisburd refers to this as the Law of Crime Concentration.6 Like suicide, crime is tied to very specific places and contexts. Weisburd’s experiences in the 72nd Precinct and in Minneapolis are not idiosyncratic. They capture something close to a fundamental truth about human behavior. And that means that when you confront the stranger, you have to ask yourself where and when you’re confronting the stranger — because those two things powerfully influence your interpretation of who the stranger is.

The sense of possibility so necessary for success comes not just from inside us or from our parents. It comes from our time: from the particular opportunities that our place in history presents us with.

History and experience ought to teach us to be suspicious of Goliaths, because the very thing that makes the giant so terrifying is also the source of his weakness. David understood that, as he sized up his opponent long ago in the Valley of Elah. And in a different time and in a very different age,