Overheard this conversation on the train:
Teen 1: Brrr, it sure is cold today!
Teen 2: Ya, and on top of it, you're wearing something so soft (!?)
Teen 1: Its wool.
Teen 2: But wool has so many holes in it. How will it keep you warm?
Somebody needs to teach these kids how wool keeps people, and sheep, warm. Don't they teach physics at school any more? Or are today's kids too busy playing with their mobile phones to pay attention?