3 Brain Tricks That Will Help You Make Better Decisions - Dean Buonomano

Pop quiz, hot shot! What do cows drink? If you're like the vast majority of people, you probably just had the word "milk" flash in your brain. That's natural, as 'cow' plus 'drink' to most people equals 'milk'.

But that's your automatic system talking, and that, as neuroscientist Dean Buonomano points out, is usually the part of the brain that makes most of the bonehead decisions in life like forgetting people's names and missing easy math problems. The reflective system, on the other hand, is the more logical and computational part of the brain. It takes a little longer to arrive at the answer but that's because it's doing a much deeper dive than your other system. It's a fascinating topic, and Dean explains it perfectly. And if you're still wondering what the answer to the pop quiz was, your reflective system should've told you that cows drink water. Dean Buonomano's new book is Your Brain is a Time Machine.

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So the brain is the most complicated computational device in the known universe. The brain is indeed the most complex device in the known universe. But it’s far from perfect, and the human brain, despite all its amazing features and abilities, has many glitches and problems and brain bugs.

One ability that the brain has is to store memories, and we store memories of many different shapes and forms. But the human brain is also very fallible when it comes to memory. And there’s some things that the brain is very ill-suited to remember.

And one of the reasons why is: it goes a bit beyond this notion that we didn’t evolve to remember numbers or we didn’t evolve to remember names, which is certainly true. But it’s a bit deeper than that in terms of the architecture of the brain. And those things are like long lists of numbers or long lists of unrelated words—or names, for that matter.

So one of the operational principles—to the extent that we understand how the brain works, we can refer to one of its principles. One of its sort of design principles, if you will, is what I’ll call an “associative architecture”.

If somebody says, “What’s a zebra?” you know what a zebra is in part because what that concept is associated with. You might associate it with Africa, with black and white stripes, with “it looks like a horse”. So we understand to a certain degree the world around us based on associations. Much of what we understand about the brain is based on associations.

Now when we’re memorizing long lists of numbers or random names, they don’t come with any built-in associations. So this results in something that sometimes we call the Baker Baker paradox.

So why is that? Because when somebody says “I am a baker,” implicitly and unconsciously the brain has a number of associations that are already built in with that concept.

And the Baker Baker paradox is that it’s easier to remember somebody’s profession—if they tell you “I am a baker”—than it is to remember their name if they tell you “My name is Mr. Baker.” It’s the same word but the brain is better able to store that information in the context of a profession. So maybe you think of getting up early, maybe you think of funny hats, maybe you think of bread.

So the brain as a computational device is well-suited for certain types of information storage and processing, and ill-suited for others.

Now when somebody says “I am Mr. Baker,” that name by itself doesn’t have any implicit connections. So it’s sort of standing alone, so you don’t tap into the associative architecture of the brain, of your neural circuits, which have all these links and connections between concepts and words and images and knowledge.

And understanding what our natural strengths and weaknesses are certainly makes us capable of making better decisions. Many of the decisions we make end up being good decisions, but many of the decisions we make are poor decisions, and sometimes we make decisions that are not in our own best interests.

The automatic system is sort of quick, and sometimes you can think of that as your intuition. It’s associative in nature. It’s emotional. It makes quick sort of heuristic decisions.

In order to understand how the brain makes decisions, of course, is a mystery—we don’t fully understand how the brain works or where our decisions come from—but as a simplifying rule we do have, we often simplify it into having two systems within our brain.

Sometimes we call those the automatic system and the reflective system.

Big Think

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Buxone Videos January 31, 2018