The article states he learned how to read these by purchasing retired cards from the gift shop. They were consistently cut, apparently, to create a slight aberration.
And what has happened here is that when you play the house, with the house cards, and win because you’re observant, they still win. Surely that is fair play. [eta: /s]
If the casino never took advantage of that before, I’d be surprised. But the casino just did exactly that, here, and got away with it.
