• A flaky test is an annoyance to a human and a catastrophe to an agent. The human re-runs it and moves on. The agent reads the random red as a defect and starts changing correct code to make the noise go away.
• Red is a reward signal, and the agent cannot tell yours is corrupt. Every failure says change the code, every pass says stop. A test that fails at random trains the agent to chase noise it has no way to recognize as noise.
• Determinism is the precondition for unattended autonomy. An agent closes the loop safely only when red means wrong and green means done. A flaky suite breaks that contract and quietly converts autonomy into damage.
• The agent's defining strength becomes the liability. It never shrugs, never re-runs on a hunch, never knows which failures to ignore. The tirelessness that makes agents good at the loop makes them defenseless against a noisy one.

Read the argument: A Flaky Test Is a Corrupted Reward Signal