It is the conviction of a number who are at present attempting to rid logic of these ancient disabilities that their common source is to be found in a lack of continuity between the acts of intelligence (or to avoid the dangers of hypostasis, intelligent acts) and other acts; between logical conduct and other conduct. So wide, indeed, is this breach, that often little remains of the act of knowing but the name. It may still be called an act, but it has no describable instruments nor technique of operation. It is an indefinable and often mystical performance of which only the results can be stated. In recent logical discussion this techniqueless act of knowing has been properly enough transformed into an indefinable "external relation" in which an entity called a knower stands to another entity called the known. For many centuries this breach between the operations of intelligence and other operations has been closed by various metaphysical devices with the result that logic has been a hybrid science,--half logic, half metaphysics and epistemology. So great has been the momentum of the metaphysical tradition that long after we have begun to discover the connection between logical and non-logical operations its methods remain to plague us. Efforts to heal the breach without a direct appeal to metaphysical agencies have been made by attempting a complete logicizing of all operations. But besides requiring additional metaphysics to effect it, the procedure is as fatal to continuity as is an impassable disjunction. Continuity demands distinction as well as connection. It requires the development, the _growth_ of old material and functions into new forms. Driven by the difficulties of this complete logicization, which are as serious as those of isolation, logical theory was obliged to reinstate some sort of distinction. This it did by resorting to the categories of "explicit" and "implicit." All so-called non-logical operations were regarded as "implicitly" logical. And, paradoxically, logical operations had for their task the transformation of the implicit into the explicit.