This thread reminds me of a recent newspaper article about decision making. It found in a study that most people tend to make up their minds rather early (gut instinct, quick analytical skills, whatever), and that further exhaustive analysis doesn't change the decision or the outcome.
There is also a book on the subject called "Blink" by Malcom Gladwell (for those bad weather days).
We take a slice of information in the early moments of a decision, and it stays with us through the decision making process. If we could weed out all the emotion and crap that comes into play, we would "know" the answer (that we've had) all along, and save all of that back-and-forth stuff.
Alas, we aren't built that way and need to completely analize and rationalize every aspect.
I guess that way we can be more assured that we won't be saying "Oh, I didn't think of that!".
