Field Trip! Please go watch this Numberphile Video at: http://www.youtube.com/watch?v=e4sF_Z5oJek.
I can’t add anything to this presentation, other than I cannot find a source to order either Fibonacci Tartan fabric or garments made out of Fibonacci Tartan. Though it would be kewl to have a tartan for mathematicians, especially Italian mathematicians. (I personally am not Italian, and I’m not aware of any Italian ancestors in my family tree. But my daughter was born in Italy.)
P.S. The word “Kewl” is pronounced like the words “cool” and “kool”, but has nothing to do with temperature or a child’s soft drink mix.