Track "Inquisition part III" by Matta, taken from the "The Lost" record released by Ad Noiseam (adn126)
They say that we all lose 21 grams at the exact moment of death. They say that it's the weight of the human soul.
Well, it was Dr. Duncan MacDougall of Haverhill, Massachusetts who first attempted to weigh the human soul. In 1907, he placed 6 dying patients on a homemade scale, which also acted as a bed for the patients. More recently in Dan Brown's novel, "the Lost Symbol", there is a segment that explains how "The Institute of Noetic Science" uses noetics to weigh the human soul. After tests on terminally ill patients, it came across that immediately after death, a person's weight dropped.
So, what would happen if they found a way to contain this invincible mass.. this soul.. Obviously the only reason to do this would be to put it in some kind of awesome robot.. yeah!