I am quoting a line from Fraud introduced in Malcolm Gladwell’s Blink introduced in Tom Johnson’s blog.
When making a decision of minor importance, I have always found it advantageous to consider all the pros and cons. In vital matters, however, such as the choice of a mate or a profession, the decision should come from the unconscious, from somewhere within ourselves. In the important decisions of personal life, we should be governed, I think, by the deep inner needs of our nature. (268)
I agree. Snap decisions (gut feeling) regarding big decisions do not lie. So what should be done is to write down (or create the first prototype) rapidly, then take time to refine it. What matters is the overall direction and it rarely fails as long as I listen to my body, not my brain.