To artificially isolate the specialised sciences from philosophy amounts to condemning scientists to finding for themselves world-view and methodological guidelines for their researches. Ignorance of philosophical culture is bound to have a negative effect on any general theoretical conclusions from a given set of scientific facts. One cannot achieve any real theoretical comprehension, particularly of the global problems of a specialised science, without a broad grasp of inter-disciplinary and philosophical views. The specialised scientists who ignore philosophical problems sometimes turn out to be in thrall to completely obsolete or makeshift philosophical ideas without even knowing it themselves. The desire to ignore philosophy is particularly characteristic of such a trend in bourgeois thought as positivism, whose advocates have claimed that science has no need of philosophy. Their ill-considered principle is that "science is in itself philosophy". They work on the assumption that scientific knowledge has developed widely enough to provide answers to all philosophical problems without resorting to any actual philosophical system. But the "cunning" of philosophy lies in the fact that any form of contempt for it, any rejection of philosophy is in itself a kind of philosophy. It is as impossible to get rid of philosophy as it is to rid oneself of all convictions. Philosophy is the regulative nucleus of the theoretically-minded individual. Philosophy takes its revenge on those who dissociate themselves from it. This can be seen from the example of a number of scientists who after maintaining the positions of crude empiricism and scorning philosophy have eventually fallen into mysticism. So, calls for freedom from any philosophical assumptions are a sign of intellectual narrowness. The positivists, while denying philosophy in words, actually preach the flawed philosophy of agnosticism and deny the possibility of knowing the laws of existence, particularly those of the development of society. This is also a philosophy, but one that is totally misguided and also socially harmful.
It may appear to some scientists that they are using the logical and methodological means evolved strictly within the framework of their particular speciality. But this is a profound delusion. In reality every scientist, whether he realises it or not, even in simple acts of theoretical thought, makes use of the overall results of the development of mankind's cognitive activity enshrined mainly in the philosophical categories, which we absorb as we are absorbing our own natural that no man can put together any theoretical statement language, and later, the special language of theoretical thought. Oversimplifying the question a little, one may say without such concepts as property, cause, law or accident. But these are, in fact, philosophical categories evolved by the whole history of human thought and particularly in the system of philosophical, logical culture based on the experience of all fields of knowledge and practice.
Knowledge of the course and results of the historical development of cognition, of the philosophical views that have been held at various times of the world's universal objective connections is also essential for theoretical thinking because it gives the scientist a reliable yardstick for assessing the hypotheses and theories that he himself produces. Everything is known through comparison. Philosophy plays a tremendous integrating role in scientific knowledge, particular ly in the present age, when knowledge has formed an extremely ramified system. Suffice it to say, for example, that medicine alone comprises some 300 specialised branches. Medicine has "scalpelled" man into hundreds of little parts, which have become the targets of independent investigation and treatment.