Stanley Milgram answered the call to this problem by performing a series of studies on the Obedience to Authority. Milgram's work began at Harvard where he was working towards his Ph.D. The experiments on which his initial research was based were done at Yale from 1961-1962.
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The generator has 30 switches in 15 volt increments, each is labeled with a voltage ranging from 15 up to 450 volts. Each switch also has a rating, ranging from "slight shock" to "danger: severe shock". The final two switches are labeled "XXX". The "teacher" automatically is supposed to increase the shock each time the "learner" misses a word in the list. Although the "teacher" thought that he/she was administering shocks to the "learner", the "learner" is actually a student or an actor who is never actually harmed. (The drawing of lots was rigged, so that the actor would always end up as the "learner.")
At times, the worried "teachers" questioned the experimenter, asking who was responsible for any harmful effects resulting from shocking the learner at such a high level. Upon receiving the answer that the experimenter assumed full responsibility, teachers seemed to accept the response and continue shocking, even though some were obviously extremely uncomfortable in doing so.
The theory that only the most severe monsters on the sadistic fringe of society would submit to such cruelty is disclaimed. Findings show that, "two-thirds of this studies participants fall into the category of ‘obedient' subjects, and that they represent ordinary people drawn from the working, managerial, and professional classes (Obedience to Authority)." Ultimately 65% of all of the "teachers" punished the "learners" to the maximum 450 volts. No subject stopped before reaching 300 volts!
http://www.new-life.net/milgram.htmThe Milgram experiment was a series of famous scientific studies of social psychology, intended to measure the willingness of a participant to obey an authority who instructs the participant to do something that may conflict with the participant's personal conscience.
The experiment was first described in 1963 by Stanley Milgram, a psychologist at Yale University,<1> and later discussed in his 1974 book, Obedience to Authority: An Experimental View.<2>
The experiments began in July 1961, three months after the start of the trial of Adolf Eichmann in Jerusalem. Milgram devised the experiment to answer the question "Could it be that Eichmann and his million accomplices in the Holocaust were just following orders?
http://en.wikipedia.org/wiki/Milgram_experimentI think this is the more important question.