"If you're so smart, how come you ain't convincing?"

"Convincing" has long been a problem for Chris Langan. Malcolm Gladwell relates a story about Langan attending a calculus course in first year undergrad. After the first lecture, he went to offer criticism of the prof's pedagogy. The prof thought he was complaining that the material was too hard; Langan was unable to convey that he had understood the material perfectly for years, and wanted to see better teaching.