Can you fold a square sheet of paper into three equal rectangles, without using anything but folding?

(That is, you are not allowed to use anything but your hands, and you cannot do anything but folding... everything else is forbidden!)

(In reply to To Err is human. by Penny)

Right.

I've been doing exactly this to fit letters into envelopes for donkeys' years.

By the way, how does one "hold paper like an S"?

Posted by FrankM on 2008-01-18 01:30:45