BUNGHOLE OF THE WEEK: SPLITTING HAIRS

SPLIT HAIRS - "Argue extensively over trifles or fine distinctions; quibble. A hair can be split today without much trouble, but once it was thought to be so fine that an effort to split it would be a waste of time. The same was true of trifling points, and the analogy between the one and the other was made long ago. A translation in 1691 of Gabriel D'Emillianne's 'Observations on a Journey to Naples' offered: 'Shewing himself very inventive and dexterous at splitting a Hair in his way of handling Scholastick matter.' Gabriel D'Emillianne was the pseudonym of Antonio Gauin." From "Dictionary of Cliches" by James Rogers (Wings Books, Originally New York: Facts on File Publications, 1985).

Source: http://www.phrases.org.uk