The empirical method has proved to be quite capable of taking care of itself. In one point - a comparatively unimportant one - is the revealed character of the Crusonian science particularly obvious; I mean Crusoe s discovery of his personal equation (for we must assume that he made this discovery), of the characteristic personal reaction-time affecting his astronomical observations. And concerning his scientific papers, it is only in attempts to explain his work to somebody who has not done it that he can acquire the discipline of clear and reasoned communication which too is part of scientific method. Einstein did not set out to discover prejudices; he did not even set out to criticize our conceptions of space and time. Thus the sceptical attack upon science launched naive the sociology of knowledge breaks down in the light of scientific method. And, no doubt, it is very much more like science than the scientific book which was revealed to the clairvoyant, for Robinson Crusoe applied a good deal of scientific method. In order to apply these considerations to the problem of the publicity of method, let us assume that Robinson Crusoe laboratories, astronomical observatories, etc., naive in writing a great number of papers, based throughout on observation and exp cerning the inherent possibilities of our own resu omes manifest. Scientific results are relative (if this term is to be used at all) only in so far as they are the results of a certain stage of scientific development and liable to be superseded in the course of scientific progress naive . The process never be perfected, but there is no fixed barrier before which it must stop short. The classical case in point is again Einstein s discovery of our prejudices regarding time. And yet, I assert this Crusonian science is still of the revealed kind; that there is an element scientific method missing, and consequently, that the fact that Crusoe arrived at our results is nearly as accidental and miraculous as it was in the case of the naive For there is nobody but himself to check his naive nobody but himself to correct those prejudices which are the unavoidable consequence of his peculiar mental history; nobody to help him to get rid of that strange blindness conlts which is a consequence of fact that most of them are reached through comparatively irrelevant approaches. At any rate, we can say in regard to this incrustation that science is capable of naive of breaking down some of its crusts. It was one of the greatest achievements of our time when Einstein showed that, in the light of experience, we may question and revise our presuppositions regarding even space and time, ideas which had been held to be presuppositions of all science, and to belong to its categorial apparatus.