It's ALL about memory and math skills, for those who are card-counting in their heads.
Oh, wait.........do the casinos hand out calculators to use while counting cards?
Just so you know, BB, if you have never actually worked for a casino you have absolutely no idea what goes on as far as security and table games. You, yes even you, cannot possibly get from a book anywhere near such knowledge as anyone who has worked for one. If you are playing with House cards, in a House game, being dealt by a House employee you are definitely subject to House rules and if you refuse to abide by those House rules, the House will gladly cash in your chips or EZ Pay slips and allow you to go elsewhere....... and put you on the "no admittance to this casino ever again" list serviceable
through biometrics.