Of course, considered as content, the idea is just as particular from this point of view as from any other. We still have to discuss the question as to whether or not the particularity of the idea has a logical value. The fact that it had none in Bosanquet's theory sets a limit to the validity of thought. But if the real test of the validity of a judgment is the act in which it issues, then the existential aspect of the idea must have logical value. The existential aspect of the idea is the "my" side of it. It is as my personal experience that it exists. But it is only as my idea that it has any impulsive power, or can issue in action. Far from being ignored, therefore, the existential aspect is essential to the logical, the determinative, value of an idea. Ideas, according to the representational theory of knowledge, proved to be a poor medium for knowing reality in still another respect. They are in their very nature contents that have been reduced from the fulness of experience to mere index-signs. Even though their reference to a fuller content in the objective world of meanings presented no problem, still this objective world of meanings is far removed from reality. And yet, in order to know, we must be able to affirm ideas of reality. On the functional theory of ideas, their value does not rest at all upon their representational nature. They are not taken either in their existence or in their meaning as representations of any other content. They are taken as contents which mark a given function, and their value is determined entirely by the adequacy of the function of which they are the conscious expression. Their content may be as meager as you please. It may have been obtained by a long process of reducing and transforming sensory experience, but if it serve to enable its possessor to meet the situation which called it up with the appropriate act, then it has truth and value in the fullest sense. The reduction of the idea to a mere index-sign presents no problem when we realize that it is the tool of a given function, not the sign for a different and fuller content. The idea thus becomes a commendable economy in the thought-process, rather than a reprehensible departure from reality. We have already upon general considerations criticised the point of view which holds that ideality consists in reference to another content. In arguing that this reference cannot be primarily to reality itself, but rather to an intermediate world of meanings, Bosanquet cites the question and the negative judgment. In the question ideas are not affirmed of reality, and in negation they are definitely denied of reality, hence their reference cannot be to reality. It must therefore be to an objective world of meanings. It may be worth while to point out in passing that, from the functional point of view, the part played by ideas in the question and in negative judgment is the same that it is in affirmation.