Everything that you know about yourself, your entire sense of the self, is coming from others. It is a borrowed sense.
What is the relation between a machine and a human being?
A machine works far more efficiently than a human being but is totally unaware of its own processes. Even the best computer does not know itself though it may be a thousand times more efficient than a human being. The essential difference is that a human being may know himself, he has the power of reflecting.