Books have been said on this item, and the contention and interchanges about where the "hot" video slots are placed in the casino are still ongoing – sixty years after slot machine games were first placed in gambling houses.

The traditional rule is that the superior slot machine games were installed just inside the door of the casino; so that people passing by would see jackpot winners … be attracted to come inside … play. Our theorem is that this is no longer true.

Many of the major casinos today are herculean complexes … it is not possible to see inside from the sidewalk, so there is no longer a reason to put the ‘loose’ slot machines in close proximity to any entrances.

Another standard rule is that loose slot machines are placed on the major aisles in the casinos, again so that more potential players could see winning jackpots and be encouraged to play. Notably however, we find that this also is not a universal rule any more.

What casinos found over the years is that people walking down the busy aisles were frequently on the way to somewhere else. If they played slot games at all, they would simply put in their loose change because they happened to be walking by. Win or lose, they would very often not stop to keep playing. And the very last thing a casino wants is for someone to win a jackpot by playing only a few coins and then not stay to put it all back in!

Nowadays, casinos are constantly changing their philosophy about where to place the loose slot games.