Well, a lot of baseball math is theoretical, and frequently applied by guys who have day jobs tracking market trends. No matter how elegant your theoretical model is, you need to have the right pitchers in place, the organization to draft and develop lots of young pitchers, the capital to acquire outside players and pay them, and the coaching staff to maximize them efficiently. Even if all that works out, there are a million other variable outside of your control that can send you into crisis mode at any time.