It is also true, as already mentioned, that in the process of fulfilling the plan, of realizing the idea, further determination and specification is produced in the plan itself. The idea as a plan is certainly not formed all at once. Nor does it reach and maintain a fixed content. No purpose is ever realized in its original content. But this does not mean that its realization is, therefore, "partial," "incomplete," or "fragmentary." It is a part of its business to change. The purpose is not there for its own sake. The purpose is there as a _means_ to the reorganization and reconstruction of experience. It exists, as Mr. Royce says, as an instrument, "as a tool" for "introducing control into experience." And as, in the process of use, a tool always undergoes modification, so here, as an instrument for reconstructing habit, the plan, too, undergoes reconstruction. Indeed, as regards its content, it is itself, as Mr. Royce says, as much a habit, as much "the product of association," as any part of experience. The purposing function, the purposing activity, remains; its content is constantly shifting. Here, too, is where "the submission of the idea to the object" takes place. Only, here, it is not a submission to an object already constituted as it is in Mr. Royce's conception of the absolute system. The idea as an hypothetical plan of action, as a trial construction, must be tested by the activities it is attempting to reconstruct. That is to say, at this point the question is: Does the plan apply to the activities actually involved in the unrest? Has it diagnosed the case properly, and is it therefore one in and through which these activities can operate and come to unity again? The "submission" here is the submission of the purpose, the end, to the material out of which it is formed, and with which it must work. But again this material to which the idea submits itself is anything but finally fixed and "complete" in form. On the contrary, as we have seen, it is just the fragmentary and incomplete condition of this material that calls for the idea. Yet the idea as a plan must be true to its mission, and to this material, and in this sense must submit itself to whatever modifications and reconstruction the material "dictates" as necessary in order that it may function in and through the plan.[204]