What I like most about this explanation is that it isn't biased towards any particular domain.
Evolution occurs not just on the level of individual organisms, but on the level of genes, groups/families of organisms within a species, entire species, cultures, religions and philosophies, ideas, and perhaps even universes!
As long as a system has variability of a trait, heredity of that trait to other agents, and selection for preferential heredity of the trait, evolution occurs!
Essays which feature evolutionary logic:
Posted 2020 August 4, last updated 2020 November 26.