Yet you can do that in New York and San Francisco as well. In those cities, however, you don't have a chance to get your money back and perhaps take home some extra cash on the side. Timing in those cities means flights landing as scheduled and empty cabs passing by at the right moment. Timing in Las Vegas can sometimes collide with good luck and bring about a windfall of cash. Other times it can just cover your expenses.
Bad luck needs no timing, however, because it always comes at a bad time.
In the gaming field a good card player can improve his chances of winning at either poker or even blackjack. Just paying attention is a great way of increasing your chances at getting lucky on the felt tables. Not so with games involving dice, roulette wheels or slot machines. In those games you are hoping for the right combination of numbers or symbols to line up at the right time. You are hoping to get lucky.