Wallerstein analyses world systems and epistemology of the structures of knowledge. Historical systems constructs their own structures of knowledge. Capitalist system whose structures of knowledge based on Newtonian laws of motion, Cartesian dualism and Baconian scientism has determined our intelectual, political and academic lives for centuries. Philosophy which is in search
of good and science which is in search of true has has been separated fom each other. Therefore, science has been value-free and it anaylses what nature and man is. It has been held that it doesn't dominate and divert the world of values. The principal characteristic of this scientific knowledge was its certainty.
However, just as science rejected and questioned the revelation and speculative knowledge the same way after 1960's the science itself has been criticised and its truth has been questioned.
Wallerstein suggests that because the science misused or misundersood it should not be put aside.
But the end of the capitalism as a historical system and its structures of knowledge as we know it today has completed its life. Until a new historical system emerges, existing structures of knowledge will be in use and this knowledge will be premised on uncertainty.
Additionally, ı have to say that ı could not understand well the passage he is talking about Prigogine who is a Nobel laurate in physics.