"Usually, a roulette table will have two different balls of slightly different sizes. Dealers can choose which to use based on which is more comfortable. The size of the ball does not affect the outcome."

"The long run, so to speak, is the expected amount that you would win or lose if you played the game long enough to equal an average result. This is expressed as the EV, or expected value."

"Two different roulette wheels exist: European wheels which have 36 numbers plus a single zero and a house edge of 2.63% and American wheels which have a zero and double-zero and a 5.26% casino edge."

"While mechanical reels remain limited to 22 physical stops, today's video slot machines use virtual reels which can carry dozens of video symbols and hundreds of stops, allowing casinos to offer enormous jackpots."

"Short term results can fluctuate. Sometimes you win more than expected, sometimes you lose. This is called the standard deviation and this is what most people commonly see as 'luck'."