In philosophy, the premise that the cosmos is progressing from a less complex to a more complex state, thus representing a reversal of entropy.
Any increase in local diversity (e.g. the appearance of life out of matter), or any toposophic ascent (whether from subsapient to sapient, or sapient to transapient) is considered an example of evolution. Much of Negentropist memetics rests on the assumption that even collective entropy can be overturned by means of evolution. See also teleology.