 No knowledge, not even perceptual knowledge, is merely receptive, or a mirror, but is a product that results from the application of a priori forms to what is given. The explicit attack on the copy theory becomes more explicit in Windelband and Rickert’s writings over time: starting in the 1915 third edition of The Object of Knowledge, Rickert devotes a section (Chapter 2, section VI) explicitly to attacking the copy theory, and he devotes a late essay (Rickert 1934) to what he sees as a revival of the errors of the copy theory in Heidegger. In the latter essay, Rickert attacks “theoretical intuitionism”, the idea that cognition [Erkenntnis] is no more than intuition [Anschauung], a passive reception of the object that is given to us. Such a view implies that cognition is simply a copy of the object, which resembles it. However, he argues that intuition, the passive reception of what is given, merely gives “kennen” (acquaintance with), and not true “erkennen” (cognizing). Cognition requires a “complete transformation of the given intuition through non-intuitive factors” (1934 [NKR: 391]).