"Where connections were remote or even apparently non-existent, it can still be claimed that colonialism was a factor in the European technological revolution. As science blossomed in the present century, its interconnections became numerous and complex. It is impossible to trace the origin of every idea and every invention, but it is well understood by serious historians of science that the growth of the body of scientific knowledge and its application to everyday life is dependent upon a large number of forces operating within the society as a whole, and not just upon the ideas within given branches of science. With the rise of imperialism, one of the most potent forces within metropolitan capitalist societies was precisely that emanating from colonial or semi-colonial areas."