Long before a teenager fires back at an insult in a school hallway, evolution has already written the script. Research in evolutionary criminology reveals that adolescent risk-taking and rule-breaking are not failures of judgment but the precise expression of a brain optimized for peer integration and social survival. Understanding this biology — the heightened reward system, the still-maturing prefrontal cortex, the acute sensitivity to standing and fairness — reframes adolescence not as a problem to be managed but as a window of rare and consequential opportunity.