Outside-in thinking solves hard problems by importing ideas and methods from domains far from the problem's home field. Alph Bingham built Eli Lilly's InnoCentive on this bet: stuck specialists post challenges; outsiders who know nothing about the official domain often solve them anyway.
Evidence
InnoCentive solved roughly a third of posted problems that had defeated internal teams. The key was framing challenges to attract diverse solvers — attorneys, dentists, mechanics, not just chemists. Karim Lakhani found that the farther a solver was from the problem's specialty, the more likely the solve. A lawyer's tear-gas memory cracked a molecular synthesis. Bruce Cragin, a retired telecom engineer, solved NASA's thirty-year solar-storm puzzle. John Davis, a chemist, fixed an oil-spill barge problem by analogizing to a slushy straw and a concrete vibrator from a one-day construction job.
Don Swanson's "undiscovered public knowledge" — connecting scientific literatures that never cite each other — produced migraine-magnesium links years before mainstream medicine caught up.
Why specialists miss it
Local search: organizations default to the same subspecialists and methods that worked before. As fields fracture into sub-subspecialties, the box becomes nested Russian dolls. Knowledge is a double-edged sword (Pedro Domingos): it enables and blinds. Kaggle's top solvers often win health competitions without medical training.
Jill Viles, a patient outsider, matched an Olympic sprinter's rare lipodystrophy pattern via Google Images and redirected research.