It's like trying to explain integral calculus and then after you explain it, they get this deer in the headlights look. Once you have those power rankings and home field figured out, how does public perception figure into it. The public perception figures in a lot. Especially when it comes to making the cards. They are basically the slot machines of the sports book.
Slot machines are the worst odds on the casino floor, and the heaviest action.
At least once a week, although it's usually in college. College is easier because the good teams are always good and the bad teams are always bad. What NFL team would you stay away from as a bettor. Actually, it would be the Eagles. Somehow I think that would be the case almost every year.