One of the reasons why I like Frictional Games so much is because their games, especially the Penumbra series, are very plot heavy that raise a lot of interesting philosophical questions and inquiries. I noticed that Amnesia had an "obedience to authority" theme going on, as Daniel's unquestioning following of Alexander's orders can be quite easily paralleled to Philip's statement in Requiem that returning to humanity (boat ending) is no different than joining the Tuurngait hivemind. Clearly the makers of this game know and have read about Milgram's experiments.