Why Are Evolutionary Classifications Hypothetical?

Answer

Evolutionary categorizations are considered to be hypothetical because back when classification was yet in its primary times, people would randomly choose a certain characteristic on an organism and grade them according to that. This was called artificial classification, as it just depended on external characteristics. For example, Linnaeus's famous system of classification used the sexual organs or plants to classify them, i.e., whichever plants had the same looking organs were classified together. Today, the evolutionary classification is truer, in the sense that organisms are actually classified by their evolutionary relationships, and are thus actually related and similar.
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