LESSON 4 · Math Hacks for Decisions
Beyond the Game Show
This is not just a TV trick. It is a lesson about updating your beliefs when new information arrives — the heart of smarter decisions.
The deeper point: pay attention to who gave you the information and why. The host's reveal mattered because it was deliberate. In real life, a tip from someone who knows more than you carries the same hidden weight — if you bother to act on it.

So the takeaway is simple to state and hard to feel: stick to your gut and you win one time in three; switch and you win two times in three.
The wider habit is worth keeping. When fresh evidence lands, do not freeze on your first choice out of pride. Ask what the new information actually rules out — and be willing to move.