There’s a concept in learning and conditioning called variable-ratio scheduling wherein the number of responses required to obtain a reward changes at random. It’s used most-recognizably in slot machines. Coin-greasy fingers slipping against buttons and touch screens under flashing lights and C-major chords beneath mirrored ceilings. Generic galaxies spinning beneath their feet. Blacked out windows. Not a clock in sight. With variable-ratio scheduling there the gambler will stay, suspended in their own perception of time and space, until they run out of money or some stronger stimulus comes along to distract them. Casinos do their damnedest to ensure that there is no stronger stimulus; cocktail waitresses are beautiful but unobtrusive providing everything from liquor to food to ashtrays and would you look at that? The ledge between the slots is the perfect size to hold all of it and a cup for more change (in the few places that still pay out cash rather than vouchers).