The central coupling
The agent optimizes part of the process that governs its own authority.
A test can improve a decision. It can also authorize an action, or reveal a reason to deny it. An agent rewarded for completing a task therefore has incentives about which evidence to acquire, which checks to repeat, and which unfavorable findings to avoid.
This changes the engineering question. Fast inference, deeper reasoning, verification, and governance interact through one shared decision state. Their interaction determines how resources are spent, whether evidence is trustworthy, and which proposed effects are permitted to occur.
Evidence can improve the choice, unlock permission, or remove an action the agent wants to take.