To understand Inside The Edge, you have to go back in time. To the the 1950's card where counting started to be a thing. In fact a group of army veterans formed a group and called themselves the "Four Horsemen" and started using this method in earnest. They were not in any way playing on any Biblical level, in fact many times they lost heavily.
We've all seen the movies where the star is in the casino and counting cards. He's often able to multi-task whilst keeping a count, which is quite a feat. But we did say it was in the movies. So, what are the qualities necessary to count cards in real life. Yes, in a real casino situation. In the movies, it not like there's someone watching your every move, like today's pit bosses, who are trained to spot card counters and get them to back-off. So just what are the card counter characteristics needed to carry this off successfully?
So you think of yourself as an accomplished card counter. Your game of choice is blackjack. You know that there are no laws against card counting. And you also know that you need to be subtle. If you do get caught out, then you could face the dreaded "back-off".