My friend has gotten into an argument with me about betting in roulette. He believes betting 1 unit on zeroes (1/19 chance in the long run) and then DOUBLING (lol martingale) every 19 spins would yield a profit. He argues the a computer is never 'truly' random and is bound to hit 0 eventually (ala Gambler's Fallacy). The flaw in this is that at our particular casino, roulette pays 0's out 18 to 1 and I told him that. His rebuke was to instead double your bet every 18 spins instead then. Is anyone able to run this through a simulator and produce some numbers? Thanks in advance.