“And so I wouldn’t say that a well-designed Friendly AI must necessarily refuse to push that one person off the ledge to stop the train. Obviously, I would expect any decent superintelligence to come up with a superior third alternative. But if those are the only two alternatives, and the FAI judges that it is wiser to push the one person off the ledge—even after taking into account knock-on effects on any humans who see it happen and spread the story, etc.—then I don’t call it an alarm light, if an AI says that the right thing to do is sacrifice one to save five. Again, I don’t go around pushing people into the paths of trains myself, nor stealing from banks to fund my altruistic projects. I happen to be a human. But for a Friendly AI to be corrupted by power would be like it starting to bleed red blood. The tendency to be corrupted by power is a specific biological adaptation, supported by specific cognitive circuits, built into us by our genes for a clear evolutionary reason. It wouldn’t spontaneously appear in the code of a Friendly AI any more than its transistors would start to bleed.” (Eliezer Yudkowsky, Rationality)
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