Why do we need taxonomy?
Its only purpose is to prove evolution.
Could you perhaps clarify this please?
Wikipedia on Biological Classificationquote:
Current systems of classifying forms of life descend from the thought presented by the Greek philosopher Aristotle, who published in his metaphysical and logical works the first known classification of everything whatsoever, or "being". This is the scheme that gave such words as 'substance', 'species' and 'genus' and was retained in modified and less general form by Linnaeus.
Credit seems to be given to two people for our current system of classification; Aristotle (384 BC — 322 BC) and Carl Linnaeus (1707 — 1778).
Your timeline is mixed up a bit it seems.
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