It is pretty clear that they are ineffective in stopping the course of thought at present, but they have not always been so in the past and we cannot be sure that they will not be so in the future.
Marxists have some way of analyzing the development of affairs which enables them to judge far in advance of scientific thinkers what the trend of social and economic development is to be.
Scientific Judge Social
Anticipation of movement, through muscular innervation and memory, by its retention of nerve impulse images, extend the present to the limit of a second or so.
Extend Movement Images
The relevance of Marxism to science is that it removes it from its imagined position of complete detachment and shows it as a part, but a critically important part, of economy and social development.
Part Economy Relevance
There are two futures, the future of desire and the future of fate, and man's reason has never learned to separate them.
Them Never Separate
The present aristocracy of western culture, at the moment when it most clearly dominates the world, is being imitated rapidly and successfully in every eastern country.
It is characteristic of science that the full explanations are often seized in their essence by the percipient scientist long in advance of any possible proof.
Full Seized Possible