Memes , Richard Dawkins' beautiful idea about propagating ideas and their evolutionary prowess. A collection of organisms make up a genetic ecosystem. Human culture is a vast collection of memes, a memetic ecosystem. A crucial aspect of memes is that invariably they are affected by coupling with our minds, by the history of conversations that we are. Memetics involves evolution, philogeny, language, self organization, enaction, embodiement and authenticity.
Any theory of evolution is about processes of change.
To qualify, irreversible change must entail processes that lead to emergence, or at least the persistence, of ordered structure in space and time. Howard Bloom's The Lucifer Principle .