[Verse 1]
Your cortex builds a model of the world outside
Predicting what comes next before the data arrives
Rao and Ballard showed us how the system flows
Error signals climb while predictions descend below
Each layer tells the next what it expects to see
Hierarchical coding sets the neurons free
[Chorus]
Minimize the free energy, that's the brain's design
Bayesian inference running down the line
Markov blankets draw the borders of your mind
Active inference makes predictions align
The generative model climbs from low to high
Friston's principle tells us why we try
[Verse 2]
Karl Friston mapped the mathematics of thought
Free energy must fall or chaos will be wrought
Variational calculus describes the neural dance
Every spike and signal follows Bayes' advance
The brain's a betting system making constant wagers
Updating prior beliefs like biological sages
[Chorus]
Minimize the free energy, that's the brain's design
Bayesian inference running down the line
Markov blankets draw the borders of your mind
Active inference makes predictions align
The generative model climbs from low to high
Friston's principle tells us why we try
[Bridge]
Action isn't separate from the things we perceive
We move to make our models match what we believe
Top-down meets bottom-up in cortical layers
Consciousness emerges from predictive players
The boundary that separates you from the rest
Is where your Markov blanket puts you to the test
[Verse 3]
Hierarchical cascades from visual cortex peak
Primary areas whisper what the higher levels seek
Generative models paint reality's face
While error neurons keep predictions in their place
The Bayesian brain hypothesis stakes its claim
That probability theory runs the neural game
[Verse 4]
Dopamine signals when predictions go astray
Surprise becomes the teacher showing us the way
Precision-weighted errors tune the learning rate
As neural networks calibrate and modulate their state
From autism to psychosis, when the models break
The free energy principle shows what's at stake
[Chorus]
Minimize the free energy, that's the brain's design
Bayesian inference running down the line
Markov blankets draw the borders of your mind
Active inference makes predictions align
The generative model climbs from low to high
Friston's principle tells us why we try
[Outro]
From molecules to consciousness the pattern's clear
Prediction engines built through evolution's years
The rabbit hole of mind goes deeper than we know
Where mathematics meets the self's eternal glow