2 published lessons with this tag.
Recording what you expect to happen and comparing to what actually happens is the only reliable method for calibrating judgment. Without a written record, hindsight bias rewrites your memory of what you believed, making genuine learning from experience impossible.
The ability to see clearly — not optimistically, not pessimistically, but accurately — is rarer and more valuable than most technical skills. Calibrated perception compounds into better decisions, and better decisions compound into better outcomes at every timescale.