Evolution is something that happens, willy-nilly, in spite of all the efforts of the replicatiors (and nowadays of the genes) to prevent it happening.

willy-nilly (adv) 1: in a random manner; ”the houses were randomly scattered”; ”bullets were fired into the crowd at random” [syn: randomly, indiscriminately, haphazardly, arbitrarily, at random, every which way] 2: without having a choice

– source: The Selfish Gene, p. 18