Seems like we've got a real fine Carl-Zeev "dispute." I eagerly await the outcome, any outcome, as I watch the Red Sox exhibition game. They're playing Tampa Bay and lead 4-3 in the 5th.
No outcome, just a lesson in nomenclature and laws of math, never divide by zero, or when taking a square root, always remember the +/- (the square root of 4 is not 2 but, +2 and -2).