I saw the linguistics connection as being that distinguishing one genus&#x2F;species from another is a very similar problem to distinguishing one language&#x2F;dialect from another. In both cases the population of organisms or of language users doesn&#x27;t break apart into disjoint subsets naturally---nobody has a label within them saying &quot;homo sapiens&quot; or &quot;Farsi speaker&quot;. These distinctions are artificially imposed and ultimately arbitrary.