Well, I'm not the only one who gets upset over the ''spontaneous'' tangling and knotting of ear phone wires, and this would apply to necklaces, as well. It's maddening! At last, a scientific explanation for this phenomenon; this is a helpful read.
http://blogs.discovermagazine.com/s...nation-earphones-always-tangled/#.XOA8pY7Yr8k
http://blogs.discovermagazine.com/s...nation-earphones-always-tangled/#.XOA8pY7Yr8k