In his commentary on health and diseases, Aristotle follows his bent as a biologist and looks at how the body of the healthy members of any species works. He notes that the creatures which fail to match the standards of the healthy members of their species are unhealthy or diseased. Since the time of Aristotle, the field of medicine has accepted the health indices of the healthy men and women as the optimal standard for all human beings. But in 2020, the medical establishments in most nations have engineered a biological inversion. In the ongoing virus pandemic, they are using the health indices of the few unhealthy men and women to develop criteria which are applicable to everyone.