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

[Peter Vince]

Hi Rob,

	Two would give you SOME confidence if they read the same, and at least you would know to be wary if they didn't.  With 
three, you can use a majority voting system, and that is what we do (although we are not at sea!)

	Peter Vince  (London, England)


On Fri Oct 24  5:31 , Rob Seaman <seaman at noao.edu> sent:


> 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