..I saw the movie Charly,  he never became smart enough to stay smart...as on the movie Limitless, his priority after he got off the pill was to become president, not solve aging not solvea theories of everything as if the ultimate power was to be president not invention....hahah,(reply>), ..like Columbo, just one more thing, hahah, Khan Academy was set up to fill in gaps that happened in schools it has nothing to do with the quality of teacher as it has to do with the amount of time allotted to each student, Khan academy starting as private tutoring for relatives then moved to the internet for those that were seeking out help...there is a private tutoring business near where I work and they are booming...,(reply>), PS: Anyone that show me they can live 200 years will have my full attention, hahaha