Fifteen Reds in a Row: When Roulette Streaks Are Math, Not Magic
A 15-red streak on European roulette has probability ~0.0034%. Across a million spins on a million wheels, it's expected to happen often. Here's the math.
Paroli (Reverse Martingale): The Math of Riding Streaks
Paroli doubles after wins, not losses. Bankroll risk is bounded, but expected return is identical to flat betting. Variance is the only thing that moves.