EN
In the first part of the paper the authors describe Hrusovsky's model of the development of scientific knowledge, which, due to the influence of logical empiricism, he saw as cumulative, hypothetical-confirmational and internal, i.e. taking into account only scientific factors. In the second part it is showed, that Hrusovsky acknowledged the influence of the external factors, emphasizing at the same time the fundamental independence of scientific knowledge. He dismissed the vulgar economism as well as the extreme internalism (immanentism).