Your brain maintains a model of the world that represents what’s normal in it for you. The result is that you experience a stripped-down, customized version of the actual world. To a great extent, each of us really does inhabit our own world. But it would be incorrect to say that we create our reality; rather, our brain creates our reality for us.
Consciousness is a way of projecting all the activity in your nervous system into a simpler form. [It] gives you a summary that is useful for the larger picture, useful at the scale of apples and rivers and humans with whom you might be able to mate. —David Eagleman
Much, if not most, of what you do, think, and feel consists of automatically generated responses to internal or external stimuli. And it isn’t possible to consciously mediate all of your responses. It wouldn’t even be a good idea to try.
But how does your brain do it? How does it decide what to prune and what to allow into your consciousness? It would be highly inefficient if it had to process all of this data bit-by-bit. Fortunately, it doesn’t have to since it operates by association, which is much faster, and by filtering incoming data through the model of the world it constructs that represents what’s normal in it for you.
Built by Association
System 1, the unconscious part of your brain, uses associative thinking to develop and maintain your model of the world. However, there are some problems with associative thinking. For example:
- It sacrifices accuracy for speed.
- It doesn’t discriminate very well.
- It takes cognitive shortcuts (aka cognitive biases).
Your mental model can—and sometimes does—lead to erroneous conclusions and inappropriate responses. It’s the job of consciousness (System 2) to check the impulses and suggestions it receives from System 1, but consciousness is slow, lazy, and easily depleted. Most of the time, it’s content to go along with System 1, which means it’s susceptible to cognitive biases. By definition, cognitive biases are distortions or errors in thinking. They actually decrease your understanding while giving you a feel-good sense of cognitive ease.
Confirmation bias is the easy acceptance of information that validates what you already believe. It causes you to selectively notice and pay attention to what confirms your beliefs and to ignore what doesn’t. It underlies the discomfort you feel around people who disagree with you and the ease you feel around people who share your beliefs.
Information that confirms what you already believe to be true makes you feel right and certain, so you’re likely to accept it uncritically. On the other hand, you’re more likely to reject information that is inconsistent with what you already believe or at least you hold inconsistent information up to greater scrutiny. You have different standards for evaluating information depending on the level of cognitive ease it generates.
Evidence has precious little impact on any of us if it conflicts with what we believe simply because the cognitive strain of processing it is too great. To a very real extent, we don’t even “see” conflicting evidence. While total commitment to your particular worldview (mental model) makes you feel more confident, it narrows—rather than expands—your possibilities. That means it limits your powers of discernment, your ability to increase your understanding of the world around you, and your creative potential. It closes the world off instead of opening it up.
Your Particular Model of the World
In addition to helping you navigate the world, your mental model gives rise to your sense of the way things should be. It generates expectations that are either confirmed or denied, assumptions, biases, etc. that determine what you pay attention to, what you perceive (even what you are able to perceive), how you interpret and respond to what you perceive, and the meaning you make of it all. Your mental model is the result of your genes and your experiences, of both intention and accident. Your brain has been constructing your particular model of the world since your birth, and it is continually updating and modifying it—most of the time entirely outside your awareness.
But while the contents of your mental model determine what you think, feel, do, and say, you can’t search them—or follow a bread-crumb trail backward through them—to find out precisely which aspects (and when and how they came to be) give rise to any specific facet of who you are and how you react now.
The significance of your mental model in your life can’t be overstated. Although you aren’t consciously aware of it, your mental model circumscribes not only every aspect of your present experience but also what is possible for you to do and be. It determines what you see and how you see the world, both literally and figuratively, as well as how you see yourself.
So it stands to reason that you won’t be successful in making long-lasting changes to your behavior, beliefs, or attitude unless you are able to change your mental model.
Changing the Status Quo
The often-quoted statement is true: we don’t see things as they are; we see them as we are. If you want to live a fuller live, if you want to be more effective or useful or loving in the world, you first need to recognize that your greatest constraints are imposed by your own mental model.
You can’t do away with your mental model—or “think outside the box,” since the box is your mental model. But you can expand it through learning, through exposing yourself to new situations, people, and ideas, and through physical movement. You can grow new neurons and generate new neuronal connections and pathways. Those new neuronal pathways represent alterations to your mental model, a change in your status quo to a new normal for you.
Part of the series A-Z: An Alphabet of Change.