Gut Vs. Brain: The Body’s Best Decision-Making Organ
Sunday, March 28th, 2010
Is it best to make rational decisions with your brain, or just go with your gut? Are people who insist on logic making the best use of all available information, or are they missing out on something far more powerful?
We always hear that sometimes you just have to listen to your gut. What exactly is the gut, anyway? Dictionary.com offers this definition:
“the alimentary canal, esp. between the pylorus and the anus, or some portion of it”
If I had to pick a body part other than the brain to listen to, I’m not sure this would have been my first choice. Why not the skin, heart, or solar plexus, or even the appendix? But anyway, I’m willing to consider that maybe we do underestimate the decision-making power of our intestines.
I asked about it on Twitter, and got a couple of responses. @Armen said:
“My gut has told me some very smart things that I have ignored and paid for, but I hear your point there [that the brain is more likely to be right]…It sure is overrated. On the other hand, it is underrated by folks who ignore it until problems show up…Some that come to mind here are gut telling to see dentist, or to come clean on lie, or to try a biz opportunity”
But even if the gut works in these cases, is it the best source of advice?
Regarding the dentist, you can listen to the calendar that says to go every six months, or to your nerves that say you have a toothache. Regarding the lie, you could listen to your conscience and not lie in the first place.
As for the business opportunity, this is where I can see the gut being helpful. Many business ideas that looked crazy on paper have become huge successes. In these cases, only a gut feeling could convince someone to follow through without a logical reason.
But gut feelings can also lead people astray, such as the gambler who “just knows” that his luck is about to change (only it doesn’t). How do you sort out the accurate gut feelings from all the rest?
Maybe the best idea is to use the gut not as a replacement for the brain, but as an idea generator to brainstorm (intestinestorm?) potential options before handing them over to the brain for evaluation.
Back to Twitter, @MiscBytes said:
“Gut” is just our brain using shortcuts it’s already figured out!
http://www.miscbytes.com/gut-feelings/
The linked post mentions a book that talks about the brain quickly using rules of thumb to make its best guess without analyzing all the data. This best guess is known as a “gut feeling.”
It’s not always right, of course. Gut feelings would tell you that a bowling ball falls faster than a grape, that Saddam Hussein had weapons of mass destruction, that there are no irrational numbers in the Cantor set, and that it’s better to upgrade a Prius than a Suburban (see When Logic And Intuition Fail).
But while poring over all the data might be better in theory, a gut feeling often works well when facing a shortage of time. An excess of data can also overwhelm you, blinding you to the answer that your intuition can clearly see.
Right now, think of some either-or decision you have to make, something you haven’t thought out yet. Going to work tomorrow vs. taking a day off, having a healthy meal vs. junk food, buying this house vs. the other one, something like that.
I’m going to flip a coin to help you decide. Heads, you take the first option. Tails, you take the second. Ready?
The coin is in the air…I’ve caught it, and it’s…
But I don’t need to say what it is. You already know what you want it to be. This is your gut talking. Does it conflict with your brain? And which organ will win?
Photo by mikebaird


