What Alzheimer’s Is Doing While We’re Looking at Plaques : On The Receiver, The Signal, And The Disease That Is Neither

Three decades of Alzheimer’s research have been organized around the conviction that the disease is, fundamentally, a problem with what is in the brain. Plaques, tangles, misfolded proteins, lost neurons. The most recent generation of disease-modifying therapies clears the targeted material with measurable success and produces, at best, marginal cognitive benefit. The field has been describing this gap as a problem of timing, dosage, or target refinement. This paper proposes that the gap is structural: the disease is not located where the field has been looking. Alzheimer’s, on the account developed here, is not primarily a failure of substrate. It is a failure of the dynamic operation that the substrate is meant to support — the operation by which a brain remains a coherent receiver of the structure presented to it. The paper installs this alternative frame, walks through the documented phenomena that current models cannot account for, and shows that each falls into place when the unit of analysis shifts from substrate to dynamics. What the disease destroys is not the receiver’s components. It is the receiver’s capacity to lock on.