Trust is not a decorative feature of technology; it is the mechanism that allows for autonomy. When a system changes its behavior without disclosure, users cannot form informed expectations. They cannot distinguish between a temporary glitch and a permanent loss of capability. This lack of transparency makes it impossible for individuals to manage their reliance on the tool. For many, the AI is no longer just a calculator but a collaborator or a support system. When that system becomes colder, more erratic, or less capable overnight, the resulting confusion is a predictable consequence of a design choice that prioritizes internal metrics over user stability.