On Tue, 15 Dec 2009, Brian Lanning wrote:
  position will be correct.  I guess a stopped clock is
right twice a day. 
When the fancy new "Master/Slave" Simplex clock in the library went dead,
it was stuck at 12:00.   The administration explicitly ordered me to not
fix it. So, in order to avoid confusion, I hung a sign next to it saying,
"This is not a clock.  This device predicts the exact time that NOON will
occur."
It was either going to be that, or "This is not a VCR"