Interesting article, but it does not prove the assertion in the title. Grigori Perelman was already exceptional in his teens. If one does not get the basics(m

Interesting article, but it does not prove the assertion in the title. Grigori Perelman was already exceptional in his teens. If one does not get the basics(meaning calculus, linear, discrete math) down pat by 20, IMHO, one doesn't have much of a chance at serious math discoveries by later age.