In the 1997 movie “Good Will Hunting,” a genius janitor taught himself advanced mathematics from equations left on a professor’s chalkboard. Two decades later, Josh Carroll similarly pored over equations on YouTube—today's chalkboard—during shifts as a security guard.
In Carroll’s case, the experience was transformative: making him in his own right. Highlights follow from Carroll’s journey from self-taught math scholar to ĢƵ Allen physicist and lead engineer.