Stanford tautologies

http://plato.stanford.edu/entries/selection-units/

The process of evolution by natural selection is “a process in which the differential extinction and proliferation of interactors cause the differential perpetuation of the replicators that produced them” (Hull 1980, p. 318; see Brandon 1982, pp. 317-318)

rephrase: The natural means of competitive selection(ns) is a process in which the incremental proliferation of interactors cause the incremental perpetuation of the replicators.

rephrase: The natural means of competitive proliferation(ns) results in incremental proliferation of interactors causing the  perpetuation of the replicators.

rephrase: As the proliferators compete against others, those winning the process of proliferation, perpetuate their line of proliferators

rephrase: Those that competitively proliferate, perpetuate their descendents in incremental(differential) stages, leading eventually to the formation of new species that can't -interbreed.

rephrase: Those that competitively proliferate, perpetuate their descendents.

finally: Those that proliferate, perpetuate their descendents.

Perpetuate and proliferate in this case are synonyms that self-referentially refer to the same fact, saying the same twice and thus a rhetorical tautology. In other instances *dissimilar* terms are used that self-referentially refer to the same fact. By saying the same thing twice the authors are able to insert the non-sequitur conclusion, namely that new species who can't interbreed arose in small *differential* or *incremental* steps via this process of Patrick Matthew's *natural means of competitive selection,proliferation, preservation, perpetuation* etc., which Darwin contracted to natural selection , in order to avoid giving credit to Matthew.

In Citizendium's ns article each paragraph is an exercise in saying the same thing twice as discussed elsewhere.