How diversity actually makes us smarter

In other words, diversity requires us to shift from automatic to deliberative thinking (from System 1 to System 2 in Kahneman’s terms):

In more homogenous parishes, towns, states and countries, residents aren’t necessarily obliged to take that extra intellectual step. In places where the overwhelming majority of residents share a common background, they are more likely to maintain an unspoken consensus about the meaning of institutions and practices. That consensus, Dutch philosopher Bart van Leeuwen reminds us, is enforced “through sayings and jokes, in ways of speaking and moving, and in subtle facial expressions that betray surprise or recognition.” In other words, the way things are is so self-evident that they don’t require a second thought.

Diversity, however, requires second thoughts. When the consensus is challenged in a homogenous place by the presence of new people, things get interesting. The familiar signs and symbols that undergird our implicit understanding of the world can change in meaning. The presence of conflicting worldviews causes confusion, uncertainty, and alienation for holdovers and newcomers alike. These feelings can either cause people to draw back into themselves — or force them to articulate and justify themselves to those who don’t share their view of the world. Or both.Because of our long history of immigration, the disruptions of diversity have been commonplace in American life. The late historian Timothy L. Smith famously called migration to the U.S. a “theologizing experience” that forced newcomers into the existential dilemma of having to “determine how to act in these new circumstances by reference not simply to a dominant ‘host’ culture but to a dozen competing subcultures, all of which were in the process of adjustment.”

How diversity actually makes us smarter – The Washington Post.