"What is called for is, not a temporal _regressus_, which, starting with an hypothesis, picks up abstractions by the way, and tries to synthesize them into a concrete reality of to-day, but rather, a _logical analysis_ of existing psychic forces, which shall abstract from the concrete social situation the phases that are most significant. This method will not give us the whole story either. Value will not be completely explained by the phases we pick out. But then, we shall be aware of the fact, and we shall know that the other phases are there, ready to be picked out as they are needed for further refinement of the theory, as new problems call for further refinement. And, indeed, we shall include them in our theory, under a lump name, namely, the rest of the 'presuppositions' of value. "Our reason for choosing a logical analysis of existing psychic forces instead of a temporal _regressus_--instead, even, of an accurate historical study of the past--is a two-fold one: first, we wish to cooerdinate the new factors we are to emphasize with factors already recognized, and to emerge with a value concept which shall serve the economists in the accustomed way--it is illogical to mix a logical analysis with a temporal _regressus_. But, more fundamental than this logical point, is this: the forces which have historically _begot_ a social situation are not, necessarily, the forces which _sustain_ it. The rule doubtless is that new institutions have to win their way against an opposition which grows simply out of the fact that we are, through mental inertia, wedded to what is old and familiar. We resist the new _as_ the new. Even those who are most disposed to innovate are still conservative, with reference to propaganda that they themselves are not concerned with. The great mass of activities of all men, even the most progressive, are rooted in habit, and resist change. When, however, a new value has won its way, has become familiar and established, the very forces which once opposed it now become its surest support. Or, waiving this unreflecting inertia of society, as things become actualized they are seen in new relations. What, prior to experiment, we thought might harm us, we find beneficial after it has been tried, and so support it--or the reverse may be true. The psychic forces maintaining and controlling a social situation, therefore, are not necessarily the ones which historically brought it into being."[99]