 One challenge to the term, “interactor,” was that “interacting is not conspicuous during the process of elimination that results in natural selection” (Mayr 1997: 2093). It’s difficult to imagine why anyone would say this, given the original description of the interactor as “an entity that directly interacts … in such a way that replication is differential”. Perhaps more interestingly, the “target of selection” language is rejected because selection is seen as more of an elimination process; thus, it would be misleading to call the “leftovers” of the elimination process the “targets” of selection. The term “selecton”, was proposed, which is defined as 