In a series of our papers, we have analyzed the psychological view of Y. Saeki who was one of the most famous and influential cognitive psychologists in Japan. Particularly, we have examined critically the validity of his ideas and models for understanding deeply, his viewpoint theory and his interpretation of domain specificity and found that his practice was a theorization of novices' common knowledge. However many cognitive psychologists in Japan, including eminent ones, fail to recognize the nature of his practicing and appreciate highly his researches, supporting his theories and models in cognitive psychology. In this paper, we examined why they fail to read the true nature of his research. Comparing cognitive psychology with genetic epistemology that has the same research objects as the former, we pointed out that there is no common research paradigm in cognitive psychology and interpreted this paradoxical situation in terms of paradigms. Moreover we described three tragedies of cognitive psychological researches in Japan, caused by the absence of paradigms. Finally, we proposed a possible strategy to get out of this unusual situation.