Information Geometry

Your mind navigates a curved surface you cannot see.

Your beliefs live on a curved surface you can't see.

Information geometry treats probability distributions as points on a manifold—a mathematical surface with shape, curvature, and distance. When you change your mind, you're not just swapping one belief for another. You're moving across a landscape where some transitions are easy (following geodesics) and others are nearly impossible (crossing regions of high curvature).

This isn't metaphor. It's rigorous mathematics with direct implications for understanding why some people feel everything more sharply, why certain patterns trap us in loops, why trauma creates lasting distortions, and why insight sometimes fails to produce change.

Why This Matters for Coherence

Coherence has geometry. The same mathematical structures that describe how probability distributions relate to each other also describe how mental states, belief systems, and meaning structures organize themselves. Information geometry provides the formal vocabulary for talking about:

Curvature: Why some people are more sensitive to small changes
Geodesics: The paths of least resistance through belief space
Divergence: How far apart two states actually are (not how far they seem)
Topology: Why some patterns create inescapable loops

This is the mathematical backbone of AToM's coherence framework. Understanding information geometry means understanding why coherence isn't just a nice word—it's a measurable property of how systems organize.

What This Series Covers

This series makes information geometry accessible without sacrificing rigor. We'll examine:

Your mind as a point on an invisible probability manifold
The Fisher metric and what it actually measures
Why curvature determines sensitivity
KL divergence and the math behind "something feels off"
Topological traps: holes, loops, and voids in belief space
Hysteresis and why systems don't simply return to baseline
Geodesics as paths of least psychological resistance
Dimensional collapse under trauma
The coherence operator as a unified measure
Why bottlenecks aren't metaphors—they're literal geometric constraints

Part of the SCIENCE collection, Foundations sub-hub. This series provides the mathematical foundation for AToM's coherence geometry. See also [The Free Energy Principle](/the-free-energy-principle/) and [Constructor Theory](/constructor-theory/).