In Mary Roach's "The Best American Science and Nature Writing 2011," the story examines the remarkable recovery of a man named Phineas Gage, who survives a severe brain injury. Following the incident, Gage seemingly regains his cognitive abilities and personality traits. However, a notable change occurs in his behavior that sets him apart from his previous self.

Once known for his calm demeanor, Gage transforms into a more unruly and impulsive individual. This shift characterizes him as someone who now finds pleasure in provoking trouble and challenging norms, highlighting how brain injuries can profoundly alter personality, a fascinating insight into the complexity of human nature and cognitive science.