Book is overrated. Was writen 6-7 years ago. The guy knows his math, but he is a BJ player, and that kind of logical mathematical thinking DOES NOT carry over into sports betting.
Sure you can figure what you need to break even, and what your are paying in vig at certain holds, and what sort of advantgae you may have on a scalp you see, but if you can't do it yourself Pinnacle has a caculator to show you.
Being able to do math and ferretout "value" also doesn't mean you will be succesful, you still have to pick enough winners to overcome all thelosers. With great math and decent money managemnet you might survive longer than most, but it in no way gurantees success.
But he also figured that out since he stopped selling his own picks a long time ago, and now lives off that one book, and the money he charges people to access his site that are enamoured with it (the book)
Future probabilities CANNOT be determined by past results, especially in sports betting. With cards and dice it can't either, but at least you have a finite number of possibilities, and thus can put odds on it. But just because you can put odds on it, still doesn't make it successful.
You can't look at a number or a spread and say that the numbers you have wil continue to hold true. Because every new game that is played effect the results/data. Not every hand of cards dealt changes the results you used to figure out your odds, but in sports it does.