As youngsters grow into teenagers and teenagers into young adults, it is more likely that roles become substitute identities. The amorphous blob of elementary children separates into distinct groups—the geeks, jocks, thespians, musicians, punks, emo kids, mean girls, preps, and church kids. What teenage movie doesn’t riff on the interplay among these groups? Despite what they say, every teen longs to embody a label. We want to be able to make sense of who we are and where we fit in this world.

I remember one summer when my parents took our family to a one-week camp in New Mexico. During the day, we divided into our respective age groups. I went off with the eleven- and twelve-year-olds.