they have absolutely NO place in the decision making process in time of crisis.
On a formal level you are correct. Your unconscious brain, however, doesn't give a rats behind what your conscious brain is doing. Lets say your in a bank and 8 guys charge in with AK-47s. You're making literally dozen of decisions on a second by second basis. Do you run? Follow their instructions? Have they seen me? Do I hide? Dial 911 on my cell? All this takes fractions of a second. Meanwhile, your unconscious mind is constantly informing those decisions with its' "odds calculations"... "That BG is directly between me and the door, I CAN'T GO THAT WAY..."
What is it that tells you that you can't go that way? Like David said, we call it a lot of things, in this case we'd probably say that "common sense" says I can't go that way. What's really happening though? Your brain, partly consciously and partly not, is telling you that the ODDS of making it out that door are slim and the stakes for failure are high. Is it possible that you'd make it? Yes, of course, the odds might be 1:1,000,000,000, but it's possible.
When it comes right down to it, virtually every decision we make is based on odds. Do I want to have children? If the odds were 100% that the kid would become a delinquent, I'd say "Hell No!" In real life the odds are good that my baby will be healthy, my wife will be safe, my kid will be no "worse" than any other and we'll grow old and enjoy life together. So, I have kids.
Starting a business? What are the odds and stakes of failure? What are the rewards of success?
All most everything is based on odds. We just don't "think" about it very often. Mostly, those odds are on a very informal, non-compiled level. Occasionally it helps to have the numbers put together in a formal way to aid in our understanding.
Still happily answering to the call-sign Peetza.
You do not HAVE a soul. You ARE a soul. You HAVE a body.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.