Page:Mind (New Series) Volume 9.djvu/21

 PERCEPTION OF CHANGE AND DURATION. 7 essential constituents of the object attended to. The argument is to the effect that in order to apprehend a relation we must have the related terms simultaneously before consciousness as distinct elements of the total object apprehended. But this requirement can only be satisfied if the related terms are attended to, if they are noticed and distinguished. Thus the very same argument which is used to prove that these presentations must exist would prove, if it were valid, that they cannot be subconscious. It would prove that they must be obvious and undeniable data of Introspection. Yet Schumann, Meinong, and others, including myself, cannot detect their presence at all, and I agree with Schumann and Stern in being convinced that I can detect their absence.