Ages 15–18

Teach the Cast

Teaching something is the strongest way to learn it yourself — the protégé effect. Each person here is a near-peer who's still working out one idea; explaining it to them well is the practice, and the better you know the subject, the more they master. Nothing is saved anywhere — this is just for you.

Good explanation starts with a question, not an answer. Pick someone you're close to helping master their idea — you'll surface your own reasoning as you teach theirs.

Start here

A few you're closest to helping master. The full set is below whenever you want to choose your own.

Everyone to teach

Teach a person to help them master their idea. As you get the subject, their mastery grows.

Economics Ready to teach

Elena

Still learning: a Nash equilibrium is STABLE (no one gains by switching alone) — not necessarily best for both

Teach Elena →
Engineering Ready to teach

Sy

Still learning: feasibility first — screen out designs that break a hard constraint BEFORE optimizing

Teach Sy →
Cryptography Ready to teach

Ivo

Still learning: a small keyspace is not security — a 25-shift Caesar cipher is trivially brute-forced

Teach Ivo →

Teaching Hall

No graduates yet — teach someone well and they'll earn their place here. (Each graduate is a subject you can now teach.)