Imagine a master navigator who can read the Mediterranean tides with uncanny precision but is suddenly transported to the methane seas of Titan. Their internal "competence" remains identical, yet their knowledge has evaporated. This reveals a fundamental truth: knowledge is not a portable asset stored within a skull or a server; it is a **resonant state** that exists only when the internal architecture of the agent vibrates in harmony with the external structures of the world.
## Affordances and the Gibsonian Lens
To understand why "fit" is the primary constituent of knowledge, we must look to James J. Gibson’s [Theory of Affordances](https://en.wikipedia.org/wiki/Affordance). Gibson argued that we do not perceive objects as abstract entities; we perceive what the environment "affords" us—a chair affords sitting; a handle affords grasping.
In this light, an AI's "knowledge" is actually a set of learned affordances within a digital ecosystem. When an AI recognizes a malignant mole, it is "grasping" a feature of the data environment. If the lighting conditions or camera resolution change (a shift in the environment), the affordance disappears. The AI hasn't "lost" its data, but the relational bridge has collapsed. Knowledge, therefore, is the successful coupling of an agent's capabilities with the environment's opportunities.
## Adversarial Noise: The Shattering of Fit
The most visceral evidence for the relational nature of knowledge is the phenomenon of **Adversarial Examples**. By adding a layer of "noise"—invisible to the human eye—to a picture of a school bus, researchers can cause a high-performing AI to identify it as an ostrich with 99% confidence.
This is not a failure of "logic" but a catastrophic loss of environmental fit. The AI’s "world" is a high-dimensional mathematical space defined by its training set. When it encounters adversarial noise, it is effectively being asked to navigate a room where the floor has been replaced by a holographic projection. The "achievement" of its previous correct identifications was never an absolute truth; it was a fragile alignment with a specific statistical reality.
## The Dreyfusian Background
The philosopher [Hubert Dreyfus](https://en.wikipedia.org/wiki/Hubert_Dreyfus) famously argued that AI would always struggle with "General Intelligence" because it lacks the **Background**—the unspoken, non-conceptual context of human existence.
> "The shared social world is the ultimate context... because it is not a set of facts or rules, but a way of being that makes facts and rules possible. Without a 'world,' there is no relevance, and without relevance, there is no intelligence."
> — Hubert Dreyfus, [*What Computers Still Can't Do*](https://mitpress.mit.edu/9780262540612/what-computers-still-cant-do/)
For Dreyfus, the "fit" required for true knowledge is not just a match between data and a model, but an embodied participation in the world. If knowledge is relational, then to truly "know" a chair is not just to identify its pixels, but to understand the physical reality of sitting, gravity, and human fatigue. Without this environmental immersion, AI knowledge remains a "thin" achievement—highly competent within its narrow niche, but fundamentally unmoored from the reality it seeks to describe.