Craps in London had been the joint epithet for the numbers two and three, which in hazard are the only permanent instant losing numbers for wagers on Pass. For a century after its invention, craps was abused by casinos using unfair dice. To remedy the problem, in approximately 1907, a Philadelphia dice maker named John H. Winn introduced a layout which featured bets on both Pass and Don't Pass. Most modern casinos use his innovation. Craps exploded in popularity during World War II, which brought most young American men of every social class into the military. The street version of craps
Hazard (game) chance of 6, he could win £8 (4/5 × £10). For each main the probability of winning can be calculated: In some reports on the rules of the game, the main is determined randomly by tossing the dice until a valid main appears. In this case the overall player disadvantage is 1.84%. If the caster can choose a main, he should always choose 7 (resulting in the lowest disadvantage, with 1.41%). This is the origin of a similar dice game, craps, since if 7 is always chosen the game devolves into craps. The name "hazard" is borrowed from Old French.