Ethical research provides great benefit to the public, but ethical research is not guaranteed. Research can go terribly wrong when research subjects are not protected. Egos of scientists and others in power can cause disastrous results, and that is what happened at the Dachau concentration camp in Germany. Because of incidents such as this, medical research at universities is now reviewed by Institutional Review Boards to protect subjects. But not so long ago, in the Dachau concentration camp, researchers were free to impose pain and death upon prisoners in the name of research. Prisoners were mistreated to glean knowledge; many suffered for the advancement of science and man’s ego. The history of such events is haunting. It must never happen again, and so mankind studies the past to protect the future. For if it is true that history repeats itself, mankind must be armed with the knowledge of history.