CLASSIFICATION: PLANETARY PROCESS REVIEW, SUBFILE HUMAN HEALTH FROM: Xylar Veen, Editor-in-Chief, Terra Observation Desk INCIDENT REPORT 44-C, GUIDANCE REVERSAL, PROSTATE SCREENING DIVISION

Item three concerns the American Cancer Society, headquartered in Atlanta, which now recommends that men aged 50 to 69 at average risk undergo PSA screening every two years. Its previous guidance advised against routine screening for most such men, on the grounds that testing caused more harm than good. Consider the local who followed the earlier document exactly: he declined the test through his entire fifties, reached 69 trusting the paperwork, and exited the eligible cohort precisely as the program switched on. He performed compliance flawlessly in both directions and was never tested. The disease did not change during this interval. Attendance was not required of it.

The mechanism merits notation. A panel grades the available evidence, publishes a guideline, and clinics, insurers, and waiting lists reorganize around it; the waiting list, in local usage, is the queue of those queuing for the queue. A guideline therefore functions as terrain. When the terrain reverses, appointments reverse with it, and the species experiences this as stability.

"Both documents reflect rigorous science," said Dr. Ellen Marsh, a member of the guideline panel. "We recommended against testing when the evidence favored caution, and we recommend testing now that the evidence favors it." Asked about the cohort guided in the wrong direction between editions, she replied, "That cohort received the best guidance available at publication." The desk has reviewed the statement for irony and found none. This is the confession.

The desk notes the steelman plainly: revising with evidence is rigor, and a body that never corrects is worse. It accepts this. It records only that the correction cycle and the patient lifecycle operate on identical timescales, a scheduling conflict our own Bureau resolved by reorganizing six times this cycle, each reorganization filed on Form R-6, Reorganization of the Previous Reorganization.

Finding: the species treats a decade-long instruction error as evidence the process works. Recurrence risk: certain, and calendared. Remediation plan: the Society shall file its next reversal with this desk before the current cohort finishes aging out of it, on Form G-2, Guidance, Contrary. The desk grades the process functional. The men, having survived the guidance, may now inform their physicians that they are due, and the physicians may agree, and everyone may proceed as though the last ten years were someone else's ten years. The disease, for its part, is unavailable for comment. It does not read the guidelines.