On Sep 19, 2011, at 9:59 AM, Rob Seaman wrote: > Rather I love the coherent collection of requirements. Still find it > interesting that none of my more "creative" talking points gets under the > skin like simply recommending that coherent system engineering best practices > be followed.
We agree on that, just disagree what the coherent system requirements are. > > Usual comment about apparent solar time being a red herring. Consider the > fact that we moved from apparent solar timekeeping to mean solar timekeeping. Not at all a red-herring, but rather making a subtle point that we've already moved off of apparent solar time. We're not even using mean solar time, but mean solar time at some arbitrary location. Each step is a step away from being tied to the sun. There are many more steps possible, up to and including just going with atomic time and forgetting the sun. Warner > We have had all these discussions before. Signing off for the reception with > the Lord Mayor. > > Rob > -- > > On Sep 19, 2011, at 4:37 PM, Warner Losh wrote: > >> >> On Sep 19, 2011, at 2:35 AM, Clive D.W. Feather wrote: >>> And it may well be that, in however many >>> hundreds of years (I forget) it will be before we reach a (say) 3 hour >>> difference, enough people will be working shifts or partying all day/night >>> that nobody cares about the sun any more. >> >> Please see the oft sited: >> >> http://www.ucolick.org/~sla/leapsecs/dutc.html >> >> where you'd see that 3 hours is between 1400-1800 years were we to >> immediately stop all leap seconds and not bother to use other means to speed >> the earth's rotation to keep it in sync with the atomic clocks. >> >> I do agree that you've hit the nail on the head about Rob. He loves his >> synodic day. Trouble is people get up when it gets light (and thus don't >> care about what the clocks say), or they get up with their alarm goes off >> (in which case they don't care if it is light: the boss man says be here by >> 8:00am). People care more about there being less light in winter making >> them depressed than they do about the mean apparent solar time error while >> they are ingesting their mid-day meal. >> >> Warner >> >> _______________________________________________ >> LEAPSECS mailing list >> LEAPSECS@leapsecond.com >> http://six.pairlist.net/mailman/listinfo/leapsecs > > _______________________________________________ > LEAPSECS mailing list > LEAPSECS@leapsecond.com > http://six.pairlist.net/mailman/listinfo/leapsecs > > _______________________________________________ LEAPSECS mailing list LEAPSECS@leapsecond.com http://six.pairlist.net/mailman/listinfo/leapsecs
