The Math
Risk of Ruin ≈ (1 - edge/variance)^(bankroll/bet)
With a negative edge (house advantage), ruin probability increases with more rounds played
Key insight: With Aviator's -3% house edge, the longer you play, the more certain your losses become. Short sessions have high variance (you might profit), but over many rounds, the house edge grinds down every bankroll. The only way to "win" long-term is to get lucky and stop.