Abstract

What is Kantian epistemology? How can human beings acquire knowledge? A question still seeming to be controversial. Some theorists consider Kant's epistemology as competely outdated. Nevertheless, the dispute about Kant's theory began already when its author was still alive, arising from terms and categories such as 'the thing in itself' ('Ding an sich'), the Synthesis a priori, Kant's concepts of time, space, truth, discernment and others - so there seems to be and urgent need of clarification pointing out critically Kant's theory as well as the history of its impact and reception. Followed by the analysis and valuation of alternative concepts such as idealism, materialism, evolutionary epistemology, ceritical rationalism, radical conctructivism, AI research, and others. Followed by my own cocept of an up-to-date epistemology.