“The bag circles the table several times. Each time Maya passes it to her neighbor, saying nothing. Finally the discussion is done. Maya looks troubled. She’s embarrassed, I’m guessing, that she hasn’t participated. Samantha reads from her notebook a list of enforcement mechanisms that the group has brainstormed. “Rule Number 1,” she says. “If you break the laws, you miss recess.…” “Wait!” interrupts Maya. “I have an idea!” “Go ahead,” says Samantha, a little impatiently. But Maya, who like many sensitive introverts seems attuned to the subtlest cues for disapproval, notices the sharpness in Samantha’s voice. She opens her mouth to speak, but lowers her eyes, only managing something rambling and unintelligible. No one can hear her. No one tries. The cool girl in the group—light-years ahead of the rest in her slinkiness and fashion-forward clothes—sighs dramatically. Maya peters off in confusion, and the cool girl says, “OK, Samantha, you can keep reading the rules now.” [...] Maya, for her part, sits curled up at the periphery of the group, writing her name over and over again in her notebook, in big block letters, as if to reassert her identity. At least to herself.”