Interesting thread
Let me just say this. I have witnessed some very peculiar runs of bad luck on casino games in the past. And I'm not talking about slots, but about playing card-based games, where the actual percentages in a fairly run game are easily calculated.
3Dice is the most recent casino (but certainly not the only one) that I believe that I have experienced this technique. It is subtle, for sure, but as a mathmatician I am very in tune with probabilities and nuances. The technique utilizes winning "runs" for the dealer as a way of eliminating a player's bankroll.
Realize first that the best advantage any casino has is their virtually inexhaustible bankroll (as compared to the player's). Even if the odds of a particular game were exactly even (between the player and casino) in their expected long-term payouts, the fact that the casino may have a 100, 1000, or even 10,000+ to 1 bankroll advantage to the player means that it would be extremely unlikely for the player to break the casino; however, a particular bad run would put the individual player out of business, especially at higher stakes. In a world of true-odds payouts, a casino could still make a profit just by breaking the player and winning his bankroll.
Now add to that a 2 to 5% house advantage. It would be very difficult to be a winner in the long run for the player at this disadvantage, as the more you play, the more you will lose on average. Combined that with the fact that the player's bankroll is finite and that the casino's is virtually infinite, you just will not see many winner's in the long run.
But casinos do have the problem of someone winning quickly or a large amount and cashing out or greatly reducing the size of their play. The last thing a casino wants is to lose a large bet, or string of bets, or a jackpot, and to have the player cashout without losing it back. Sure, they all know that they'll have to pay some of the players some of the time, but they really want to minimize a large hit or string of hits that leads to a large payout.
So enter a strategy of designing your games to appear consistent with the odds but one that yields far more victories or at least strings of victories to the house. Mathmatically, there are lots of different ways to do this. Many would not be detectable without knowing in advance what you were looking for, even by an in-depth review of the statistical results. But by eliminating the tendency for a player to get a good run while allowing the casino more lucrative runs of their own would virtually ensure the profits for the casino on most every player.
Do I have absolute (no pun intended) proof that this is actually occurring? No. But how many player's can swear to the fact that the casinos get way, way, way more runs of "luck" than they ever do?
A box lunch can be quite savory
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