Your Brain Is Running a Cost-Benefit Analysis on Every Idea You Share

And so is the brain of every person you're trying to reach

The brain doesn't evaluate new information neutrally.

And understanding the neuro-mechanics of this can be liberating as we work with creating space for people to consider something new - whether we’re a teacher, coach, practitioner, parent, partner…

 

---

The Brain Is a Prediction Machine — Not a Truth-Seeker

One of the most well-supported findings in modern neuroscience is that the brain's primary function is not to perceive reality accurately. It's to predict what's coming next — and to do so as efficiently as possible.

Every belief, assumption, and mental model you hold comes down to a prediction your brain has made based on past experience. 

Not passive files stored somewhere waiting to be retrieved. These are active, metabolically expensive structures that the brain has built and reinforced over time. 

These predictive systems do constant work:

• filtering incoming information, 
• generating expectations, 
• deciding what's worth attending to and what can safely be ignored.

When something new arrives… for example, a perspective that challenges an existing belief or an idea that would require the brain to update its model of the self or the world… the brain doesn't evaluate it the way we might think: openly, curiously.

It evaluates it as a cost.

Specifically: is the metabolic investment required to update my existing architecture worth what this new idea is offering?

Most of the time, especially when the idea arrives with any hint of threat or pressure, the answer the brain arrives at is: no.

 

---

What Prediction Error Actually Does

Neuroscientists use the term prediction error to describe:

the gap between what the brain expected and what it actually encountered. 

We don’t want to avoid prediction errors.  Prediction errors are the engine of learning. They're the mechanism of how the brain updates and grows. The system notices a mismatch, recalibrates, files a new prediction.

But when the gap between "what I expected" and "what I'm being told" is really large, or when there is a socioevaluative threat involved, such as rejection or threat to our social status..  the brain doesn't necessarily update. 

What the brain does next depends on two things:  

1) the mindset of the person and 

2) the nervous system conditions we created BEFORE we offered new ‘data’.

 

1)Mindset:

If the person is entering a space with the goal of learning and being willing to stay open to feedback, mistakes, and prediction errors, the brain has a chance to open up its processing enough to update and gain knowledge.  

If a person’s mindset is more about performance, how they appear to others and how they compare to others, the brain does not engage in the same kind of activity.  It activates something that looks more like protection from new information. 

This is why a well-reasoned argument, even if we deliver it with genuine care, can sometimes make someone more entrenched in their original position rather than less.  This can happen if what we are saying is an update or divergence from what their automated ideas are about themselves and the world. 

When we are asking people around us to consider something new or different than their default, there is always a chance that we might trigger a prediction error large enough that their brain's most efficient response is to defend — not absorb.

 

2) Your vibrational offering:  The space that exists before the idea

The nervous system conditions that determine whether a new idea can be received aren't created by the idea itself. 

They're created before the idea arrives.

There's a vibrational offering — transmitted through the internal state and intentions of a human nervous system to another -  that can expand a person’s brain's activity when they’re faced with something that requires their brain to update its predictions.   

The signals that one person can create in an interaction can give another nervous system the signal that: 

this is a safe context. Updating here is possible and wont’ result in rejection, shame, humiliation, lowering of my status as a valuable human.

When those vibrations are transmitted, the same idea that would have triggered defensiveness in a different context opens a space for learning. Its not necessarily that the receiver has became more open-minded or more evolved FIRST… it’s that the neural conditions for receptivity were created first.. And their nervous system responded.

This is a learnable precision... There’s a science to all of this.  It doesn’t need to be intuition reserved for the ‘naturally gifted communicators’ (that’s a fixed mindset by the way).  

and it applies in every room, every session, every conversation - in person or online - where you're asking another person's brain to consider something new.

 

---

A Moment to Reflect

Think about the last time you tried to help someone shift a belief that was keeping them stuck.

How did you sequence it? Did the new idea arrive before or after a signal of safety, connection, or shared ground?

Can you think of a time when your own brain did this? When you were presented with something that, if you're honest, was probably true or at least worth considering — and you found yourself feeling tension, tightness, or your brain building a case against it before really opening to what could be a perspective you hadn’t considered before? 

Most of us can. Because every brain does this.  The architecture is universal.

 

---

Why This Matters for the State of the Planet

I believe that the nature of the human brain-body system means is geared towards growth and learning.  BUT…  the very mechanisms designed to protect us can also be the thing that keeps us from opening to the exact information that could help us grow.

That's a reason to get more precise.

When you understand prediction error — when you can feel the moment it's being activated and know how to work with it rather than inadvertently amplify it — your work doesn't just become more effective. It becomes more sustainable. You stop expending yourself on approaches that were never going to reach the layer where change actually happens.

And you start building the kind of conditions where the people who most need what you carry can actually receive it.

The Science of Buy-In is a 90-minute masterclass + toolkit that gives coaches, therapists, educators, and leaders the neuroscience of why people open — and the specific framework for creating the conditions that make genuine receptivity possible.

Learn how to create nervous system openness for new ideas and ways of being →