As a teacher of 250 3-5 year old students every week I tie 25+ knots a week. This knot has saved all my fellow teachers a ton of time. Seems like they make shoe laces that are slick and won't hold a knot no matter what. Now I tie this once and that is it for the rest of the day.

This knot is one of the top 10 things I learned online that I share with people. And they share it with their friends, teach their kids, who tell their friends, and so on.

It still comes up as a random topic of conversation at every conference I go to where I see someone retying their slippery laces.

Yes, I use this regardless now. It seems these days most shoes I've bought have shoelaces with less surface friction and come undone really easily.

Yes, I learnt it for my basketball shoes and it spread to all my tying. Awesome