 They developed what has become known as the “dual aspect” view. They argue that many of the classic problems for the phenomenalist reading (e.g., affection) arise because it was mistakenly assumed that appearances and things in themselves are distinct kinds of objects. They argued instead that the appearance/thing in itself distinction is not an ontological distinction between two kinds of objects, but an adverbial distinction between two different perspectives or stances we can take on one and the same set of objects: we can consider them as they appear, or as they are “in themselves”.