Einstein, Newton, and Pascal decide to play hide and seek.  Einstein
is it, closes his eyes, counts to 10 then opens them. Pascal is
nowhere to be seen. Newton is sitting right in front of Einstein, with
a piece of chalk in his hand. He’s sitting in a box drawn on the
ground, a meter on a side. Einstein says “Newton, you’re terrible,
I’ve found you!”  Newton says “No no, Albert. You’ve found one Newton
per square meter. You’ve found Pascal!”