quality:corruption, structural:summarization, linguistic:voice_change
Varieties of idealism

Arguments for idealism, such as those of Hegel and Berkeley, often take the form of an argument against materialism; indeed, Berkeley's idealism was called immaterialism. Now, matter can be argued to be redundant, as in bundle theory, and mind-independent properties can, in turn, be reduced to subjective percepts. Berkeley gives an example of the latter by pointing out that it is impossible to gather direct evidence of matter, as there is no direct experience of matter; all that is experienced is perception, whether internal or external. As such, matter's existence can only be inferred from the apparent (perceived) stability of perceptions; it finds absolutely no evidence in direct experience.

If matter and energy are seen as necessary to explain the physical world, but incapable of explaining mind, dualism results. Emergence, holism and process philosophy seek to ameliorate the perceived shortcomings of traditional (especially mechanistic) materialism without abandoning materialism entirely.