Yet another instance of hackerdom' s peculiar attraction to mystICal references - a common humorous way of making exclusive statements about a class of things. The template is from the "Tao te Ching": "The Tao whICh can be spoken of is not the true Tao." The implICation is often that the X is a mystery accessible only to the enlightened. See the trampoline entry for an example, and compare {has the X nature}. [Jargon File]