Intelligibility
Reality is ordered enough to be investigated, represented, compared, corrected, and understood. Every scientific explanation, software requirement, model evaluation, and argument about whether AI is intelligible already depends on that order. Reasoning does not create intelligibility from nothing. It operates within it.
VII. INTELLIGIBILITY — WHY CAN REALITY BE UNDERSTOOD?
Invert the domain: “Intelligibility is not real.”
If no aspect of reality is genuinely intelligible, then the sentence cannot claim to communicate genuine understanding of reality. More modestly, reasoning itself demonstrates at least some intelligibility: distinctions can be grasped, relations can be followed, and explanations can succeed or fail.
Intelligibility is not the claim that human beings understand everything. It is the claim that reality is sufficiently structured and minds sufficiently capable that genuine understanding is possible.
WHY ONE: Why does reasoning presuppose real intelligibility?
Because reasoning aims at more than internal symbol consistency. It aims to understand something. If reality contains no structure accessible to reason, then successful reasoning about reality is accidental appearance rather than knowledge.
Science, ordinary perception, mathematics applied to nature, language, engineering, and historical inquiry all presuppose that at least some structure in reality can be apprehended.
WHY TWO: Why can intelligibility not be reduced entirely to projection by the knower?
If all order is projected by the mind, then the claim “all order is projected by the mind” itself lacks warrant as a description of mind-independent reality. Projection theories may explain some categories or interpretations, but a total denial of accessible structure destroys the basis for asserting the theory as true of reality.
The knower may shape representation. That does not entail that the known contributes nothing.
WHY THREE: Why does the fit between mind and world raise a grounding question?
Because intelligibility involves relation: there is something structured enough to be known and some capacity capable of knowing it. Evolutionary, cultural, neurological, and computational accounts may explain how particular cognitive capacities develop within the world. They do not by themselves answer the ultimate question of why there is a rationally ordered world in which truth-directed cognition is possible at all.
An account of the mechanism of cognition is not yet an ultimate account of the intelligibility of reality.
WHY FOUR: What must a sufficient ground of intelligibility be like?
It must be adequate to rational order on both sides of the relation: the order of what is and the possibility of a knower apprehending that order. A wholly unintelligible ultimate ground cannot straightforwardly explain why intelligibility pervades its effects without leaving rational order as an unexplained emergence.
The ground must therefore be compatible with, and plausibly productive of, rational order.
WHY FIVE: What makes the ground of intelligibility ultimate?
If the rational order derives from a deeper order, the deeper order is more ultimate. If the fit between world and mind is left as coincidence or brute fact, inquiry has halted at precisely the relation needing explanation.
The ultimate ground of intelligibility must be such that rational order is not foreign to it. Intelligibility must arise from what is itself adequate to intelligibility.
PROVISIONAL RESULT OF THE INTELLIGIBILITY CHAIN
Reality is genuinely intelligible at least in part, and the relation between rational order and rational apprehension points toward an ultimate ground that is itself rational rather than fundamentally alien to reason.
Intelligibility is real.
Reality has apprehensible order and can be meaningfully represented and reasoned about.