Dr. Lawrence Broxmeyer investigates the historic relationship between infection from Mycobacterium tuberculosis and Alzheimer’s disease dating back to 1830. In 2016 researchers discovered when they injected bacteria into the brains of rodents the animals developed Alzheimer’s disease amyloid plaques. Their discovery was lauded as ‘new’, ‘original’ and ‘outside the box’. Sorry to say, their discovery was none of the above. Alzheimer’s Disease—How Its Bacterial Cause Was Found and Then Discarded, also investigates how political and social trends influence science and thus shape our knowledge of scientific theory and application.