Tangles - Science is working on it!

http://news.yahoo.com/s/livescience/20071004/sc_livescience/thescienceofknotsunraveled

From the sounds of it,don't get your hopes up for an early cure for bird nests

The researchers suggest that cramped quarters limit the tumbling motion that facilitates the string weaving through the coils. That would explain why knots were less likely to form in smaller compared with larger boxes.

Glad to see that our nation's physicists are spending time and money to determine the obvious...