]
] Recently in the magazine Nature, we proposed a
] mathematical model to calculate and classify all possible
] tie knots. Of the 85 found, we duly predicted the four
] knots in widespread use (see below) and further
] introduced nine new aesthetic ones.

I ran across this page while googling for "how to tie a necktie" (as a prototypical geek I can barely tie a tie and have been feeling some pressure at work to wear one). Interestingly they have several -new- methods for tying ties. So right now I'm wearing a new Tommy Hilfiger tie w/ a 7,2 slim knot!

Theory of Tie Knots