On 2012年4月11日 02:49:41 -0400 Jim Jewett <jimjjewett at gmail.com> wrote: >> Accuracy: > Is the answer correct? Any clock will eventually <drift>; if a > clock is intended to match <Civil Time>, it will need to be <adjusted> > back to the "true" time. You may also point to http://en.wikipedia.org/wiki/Accuracy_and_precision We are probably interested in precision more than in accuracy, as far as this PEP is concerned. Regards Antoine.