The second half of the twentieth century brought more growth, as well as wear-and-tear and obsolescence, and the school's problems far exceed spatial deficiency.
Units reportedly sell for around $15,000 and are promoted for diagnosis of conditions including parasites, food and environmental sensitivities, candida, nutritional deficiencies and much more.
It seems likely that subtle or transient hormone deficiencies or other factors that lead to lack of descent also impair the development of spermatogenic tissue.