AI-Era Betting Discipline
AI-Era Betting Discipline · 2026
In 2026, the Kelly formula is used by AI as 'the last line of defense against the human betting impulse' — the AI computes Kelly and writes a rejection letter; the human decides whether to press confirm.
Five iron rules for AI-assisted Kelly: ① AI computes, the human decides; ② any bet ≥ half-Kelly forces a second review; ③ the AI must output an uncertainty range (wider range → more conservative fraction); ④ parameters must trace back to raw data; ⑤ the rejection letter is archived for review.
"Overconfidence is the Kelly formula's biggest enemy — every over-bet comes from it."
At the frontier is distributionally-robust Kelly (Sun & Boyd, 2018): don't assume you know the true distribution, be safe under the worst case — which is exactly the theoretical basis for F-Star's conservative fractional-Kelly default.