[LEAPSECS] Michael, brother of Jerry - a parable of timekeeping

[Rob Seaman]

 From Jack London, a question:  "Why did you sail with only one  
chronometer?"

	http://catless.ncl.ac.uk/Risks/25.41.html#subj10

If two chronometers are "no better than one", why are three better  
than two?

Rob Seaman
National Optical Astronomy Observatory