If the relevant part was that you didn't see an ace... fun semantic question: is it counting if the only number you track is 0? As for why a casino might let a

If the relevant part was that you didn't see an ace... fun semantic question: is it counting if the only number you track is 0? As for why a casino might let a counter stay: many try but not all are good at it so they're still losing money. A counter might not be accurate, or misplay other decisions like splits and doubles, or not bet bigger enough when it's favorable, or tilt after some bad luck and bet bigger when it's not favorable enough.