The sky is blue, Tuesday follows Monday, the chemical symbol for water is H2O.
These are all things we know.
Except I didn't know exactly what high heels did to feet that made them bad for you - apart from making you unbalanced and in crappy ones, in general pain.
This kind of quashes any ideas I might have had about getting some heels. I have been kind of digging the idea of being super tall recently (I'm 5'10'' in flats, but it's not quite tall enough to touch the sky).
Found via BoingBoing