In message <[EMAIL PROTECTED]>, Chuck Harris writes: >Poul-Henning Kamp wrote: >> In message <[EMAIL PROTECTED]>, Rob Seaman writes:
>Now, for 3 t-shirts Poul, reread Rob's last paragraph, but this >time with your blinders removed. I'm still trying to get the same basic point across, and answering his last paragraph would just have repeated the message yet again: To 99.999% of the Earths population, the Earth is geophysics, not timekeeping. For almost the entire population, time is defined as SI seconds, 60 of which is a minute, 24 of which is an hour, 365 of which is a year. There is a well defined formula that streches indefinitely into the future, which inserting an extra day almost every fourth year, for reasons most people do not claim to fully understand. I fully agree with Rob that there are prefectly valid physical and astronomical reasons for the leapsecond, but I keep trying to tell him that like so many other metrological details, the everchanging mass of the kilogram prototype comes to mind, it will have to be a dirty little secret in the scientfic world: We cannot economically justify imposing leap seconds on the rest of the world with six months notice. Leap days are economically feasible because most people have a big disconnect between the concepts of timekeeping and calendar but mostly because the rule is predictive and can be embedded safely in computers which are going to run autonomously for years. Leap seconds are too small for programmers to have heard about or care about, they are unpredictable for more than six months at a time and untestable in practice. Robs position, as I understand it is "fine, fine, fine! just don't call it UTC!" and that is not economically feasible either IMO. Leapseconds is not a scientific or astronomical issue, they are an economical issue. Poul-Henning -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
