How to tie your shoes

From the files of...Too much time on my hands (apologies to Styx):

How many possible ways are there to lace an average shoe? This simple question, when answered with mathematics, results in some surprisingly big numbers - on an average shoe with six pairs of eyelets, there are 1,961,990,553,600 ways to feed a shoelace though those 12 eyelets.

Courtesy...KJ Lopez of The Corner

And so...that concludes my 200th post.