An article claims that many medical patients have an instinctual ability to predict sudden changes in their medical status. But the evidence given is anecdotal and should not be trusted. The case is analogous to empirically disproven reports that babies are born in disproportionately high numbers during full moons. Once that rumor became popular, maternity room staff were more likely to remember busy nights with full moons than busy nights without them. The argument requires the assumption that ['the idea that medical patients have an instinctual ability to predict sudden changes in their medical status is not a widely held belief', 'the patients in the article were not being serious when they predicted sudden changes in their medical status', "patients' predictions of sudden changes in their medical status are less likely to be remembered by medical staff if no such change actually occurs", 'babies are less likely to be born during a night with a full moon than during a night without a full moon']