Magnus Carlsen and Gukesh Dommaraju meet again at Norway Chess 2026 in Oslo — and what happens between them on the board reveals more about decision-making under pressure than most psychology textbooks. This piece explores the cognitive traps that undermine both chess grandmasters and investors: confirmation bias, sunk cost thinking, analysis paralysis, and emotional contamination. More importantly, it draws from how the world's best players actually handle them — and what th