Terry Moore: How to tie your shoes

[Takeo]

Sound a bit weird, but "most of the people tie their shoes in a wrong way".
Fortunately i made it the right way all the time.

There are two ways: the weak and the strong form.
In this video Terry Moore shows pretty good where the difference is and what the advantages of the strong version are.

http://www.ted.com/talks/lang/eng/terry ... shoes.html