THIS ^^^^
All I will add (not saying this is your opinion KTG) is that the lack of going for it earlier in certain games was not the "no brainer" that fans and football math guys believe it to be. There are 2 to 3 obvious variables we all can look at in these situations, and there are always a number of other variables that we don't know about or think about (injuries, no push at guard, etc. etc.)