Just like a test question!

[Adam]

Originally Posted by HokiePaul

I agree with this, except I'm not using a "good guess". Officials can correct obviois mistakes by the timer when he/she has definate information relative to the time involved. A visible count is not required -- any definative official information may be used.

In this case, you have definate knowledge that more than zero seconds elapsed. Start from there and go up until you are no longer certain that much time elapsed. I might guess that 5 seconds elapsed, but if I'm only certain that at least 3 seconds elapsed, then I'm only taking 3 seconds off the clock.

If I don't have a count, I'm not doing anything, because I don't have enough information.