If he was doing olympiads in high school, he was already doing proof-based math then. I think Terry Tao describes the stages of mathematical maturity really we

If he was doing olympiads in high school, he was already doing proof-based math then. I think Terry Tao describes the stages of mathematical maturity really well: https://terrytao.wordpress.com/career-advice/theres-more-to-mathematics-than-rigour-and-proofs/ https://terrytao.wordpress.com/career-advice/theres-more-to-...