The Skeptical Teacher

Musings of a science teacher & skeptic in an age of woo.

Archive for July 24th, 2011

Solution to the “Self-tying” Knot Trick from TAM9

Posted by mattusmaximus on July 24, 2011

This is the solution to the puzzle presented in my previous blog post – Self-Tying Knot Trick from TAM9  – wherein I show you how to supposedly tie a knot in a length of rope without releasing the ends. Of course, it is a trick, so watch the video carefully to see just how the trick is done. And have fun with some friends, family, or (if you’re a teacher) students with this puzzle.  It is a wonderful exercise in critical thinking!

Check out the Youtube video for the answer…

One last thing: I cannot claim credit for inventing this trick. I learned about it from Penn & Teller’s old book “Cruel Tricks for Dear Friends”, so credit should go to them 🙂

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