If they are "lumpers", I'm a "splitter". According to Wikipedia, Charles Darwin used those terms in a letter in 1857, so the problem goes back at least 154 years.
But this is the quote I liked best:
"splitters make very small units – their critics say that if they can tell two animals apart, they place them in different genera … and if they cannot tell them apart, they place them in different species. … Lumpers make large units – their critics say that if a carnivore is neither a dog nor a bear, they call it a cat." [1]
[1] Simpson, George G. "The Principles of Classification and a Classification of Mammals." Bulletin of the AMNH, vol. 85, p. 23. 1945. American Museum of Natural History, New York.
