No doubt every soul has to be a machine first in order to become an engineer later; and one does not turn at once into an engineer. One does this gradually; that is why the influence of Karma is not the same upon every soul. The law of Karma is different for each individual. A thing can be sin for one person and a virtue for another; it can be right for the one and wrong for the other. According to this law each individual has his own Karma to meet with.