Blickets

In “Playing for All Kinds of Possibilities,” a very fun science article in yesterday’s New York Times, reporter David Dobbs describes how four-year-olds easily beat grown-ups at Blickets, a game invented by child psychologists Alison Gopnik and David Sobel. There seem to have been many versions of Blickets over the years, each designed to ferret out a different nuance of children’s understanding of the world, but in his article Dobbs is describing two that he calls “or” and “and”:

The “or” version is easier: When a blicket is placed atop the machine, it will light the machine up whether placed there by itself or with other pieces. It is either a blicket or it isn’t; it doesn’t depend on the presence of any other object.

In the “and” trial, however, a blicket reveals its blicketness only if both it and another blicket are placed on the machine.

Adults are usually stumped by the “and” version, but it gives children no trouble. Researchers believe that children succeed because they aren’t constrained by “prior biases.” Children don’t have such biases because they simply don’t know much about the world yet, and in their effort to understand, they’re willing to try out all kinds of wild ideas. As they age, they learn that some kinds of hypotheses are less commonly successful than others, and they become less willing to risk belief in these low-probability hypotheses. They grow up to be adults who lose at Blickets. They learn, Dobbs writes, that “‘or’ rules apply far more often in actual life, when a thing’s essence seldom depends on another object’s presence.”

This last claim stuck in my head, and this morning I realized why: I’m not sure it’s true, at least not about a very important category of thing, namely, people. Suppose, instead of playing Blickets with a rectangle, a triangle, and a bridge, we play Lovers with Rilke, Lou, and Gumby. And suppose, instead of placing clay tokens on top of a Blicket Detector, we play the game by leaving our three contestants alone in a room in pairs, to see if they happen to get busy. Rilke + Gumby = nothing. Lou + Gumby = also a blank. But Rilke + Lou = sonnets! Even adults are able to understand that these facts reveal that Rilke and Lou are Lovers, and that Gumby isn’t.