By definition, evolution begins its timeline at the emergence of life. Darwin's thesis, called the Origin of Species is about fairly advanced life, since the word species is defined as; a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. The species is the principal natural taxonomic unit, ranking below a genus and denoted by a Latin binomial. The timeline of evolution has been extended, since his thesis, to include single cellular life, that does not exchange genes or interbreeds; not a species. The timeline has even even gone back further to replicators, which are strands of RNA and/or DNA capable of acting as templates for their own propagation. In terms of a timeline, although this modern definition of evolution brings up back to the humble beginnings of self replicating life, even the modern definition of evolution, comes in late, since a long series of events occurred even before the emergence of replicators and/or life. This is given a different name, abiogenesis; Abiogenesis is the process by which a living organism arises naturally from non-living matter, as opposed to biogenesis, which is the creation of living organisms by other living organisms. Evolution, by definition is biogenesis. Evolution is not defined as abiogenesis plus biogenesis, implying evolution begins the story of life, in the middle of a larger intimately related timeline, where many things needed to happen first. The question becomes, does starting the story in the middle; biogenesis, impact perception differently, compared to starting the story of life at the beginning; abiogenesis plus biogenesis? These represent two different origins for drawing a curve; different slopes.