There comes a time (meetings with venture capitalists, job interviews, weddings) in every geeks life when he (geekettes usually don't use ties) must shed his uniform (t-shirts) and suit up.
This can be troublesome for us modern geeks who doesn't wear ties to work like Dilbert and therefore doesn't get to practise very often.
How do you tie a tie? Where's the manual?
The easy solution is a tie with built-in instructions.