It's actually quite freaky. Cords sitting in drawers seem to do the same thing. There's actually a competition based on how long it takes for people to untangle their technology cord jumbles.
So what's up?
I Googled it. Here's part of the answer:
the fundamental ubiquity of knots comes from the fact that they tie themselves: knots are generated by the combination of a long string with some sort of random motion. This is a sort of derivative law of nature stemming from the Second Law of Thermodynamics (maximize entropy) as applied to long floppy things: Long Things Get Tangled.Wow!
And there's more:
the knot forms in two stages: First, a loop or series of loops come together, and then the free end finds its way through the tangle.
And surprise - the tangles aren't random. They're predictable:
Among the issues now coming to light is that spontaneous knotting is apparently not a random process.See, we knew that!
There's great news though. Here's the solution:
if you don't want the drawcords on your venetian blinds to knot themselves up, get some stiffer cord—or a smaller room.Stiffer cord and a smaller room! Perfect. Start wearing tight jeans.
That way, no more 5 minute delay untangling some unrandom knot when you decide it's time for a little smartphone music!
Stay tuned, I'm about to Google "what happened to my other sock?"!