For tha the sake of economic usage of memory storage we will assume the simplest inductions between SPs. Yet, in the commeing events coming phenomena we may notice that the induction do does not describe well the relation between the SPs. We might find that although we have the induction "smell_x always come with sound_y", we might notice that in the comming coming observations sound_y donot do not follow smell_x. This will cause refutation of the induction, and we will have to try to create a new induction or forget the refuted induction. Now we will have to suggest a more complex induction. We may look at our stored relations between SPs, and see that when smell_x was not followed by sound_y, a touch-feeling_z did occur just before the appearance of smell_x. Therefore we may suggest the following induction " smell_x always come with sound_y unless touch-feeling_z occur just before smell_x".