Prof. Hiro-oka charged that Dewey ignored "objectivity" in framing his theory. But this is mistaken. Hiro-oka failed to perceive the whole of Dewey's conceptual structure. Dewey's "Experience" should not been treated as a static, tight-cell concept. It is the mother concept which gives form to other concepts in process of framing a theory. In other words, it is the matrix of differentiated and specified concepts in his theory. Hiro-oka's "Experience" is quite different from Dewey's. It does not work as the matrix at all. Hiro-oka was so indiscriminate that he unwittingly identified Dewey's fruitful concept of "Experience" with his fossilized one. This failure prevented him from studying the following three subjects. i) To study what kind of concepts a man should produce in his experience in terms of particular educational questions. ii) To study how the self should integrate himself as the agent that exercises full-scale self-control over cognition and act, not as the passive being that sheerly receives stimuli from the outside. iii) To study how to make our concepts clear-how an individual's conceptual structure becomes more coherent and more elaborate.