Percy writes:

On Tue, 21 Aug 2012, "John Williamson" writ:
€¦ I can
set a digital watch to within less than a frame of video
with practice using the pips.

OK, understood. I'm amazed at your reaction time!

Not reaction time. People are much better at hitting things to
time when they know the beat in advance than they are at
reacting. An undergraduate teaching (ie not serious) experiment
tried to measure reaction times using a regular flashing light.
I could hit the button within a few milliseconds of the light
coming on once I got the rhythm.

--
Jón Fairbairn
http://www.chaos.org.uk/~jf/Stuff-I-dont-want.html (updated 2010-09-14)