Re: [art] Fwd: New Version Notification for draft-touch-time-05.txt

Tony Finch <dot@dotat.at> Tue, 12 November 2019 13:37 UTC

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Date: Tue, 12 Nov 2019 13:37:51 +0000
From: Tony Finch <dot@dotat.at>
To: Joe Touch <touch@strayalpha.com>
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Subject: Re: [art] Fwd: New Version Notification for draft-touch-time-05.txt
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Joe Touch <touch@strayalpha.com> wrote:

> >>> Lamport clocks and vector clocks don't use time, but the section heading
> >>> implies that they do.
> >>
> >> It depends on how you interpret 'time'.
> >
> > I meant in the usual sense, as implied by the draft's terminology section.
>
> They’re a bit like Schrodinger’s cat - they jump only whey you look at
> them (or would need to). IMO, they are time scales for that reason.

Perhaps the terminology section should make it clear that your definition
of time is extended in this way.

> > The problem with that paragraph is it sets up a false dichotomy. Unix time
> > does not intend to track solar time nor SI seconds, it tracks civil time,
> > which is a different third option. Leaving that option out is misleading.
>
> The dichotomy is accurate - either time units are a physical constant or
> they’re defined relative to celestial events.

Except for Lamport clocks or vector clocks. And civil time is not
either/or wrt physical constants and celestial events, it's a mashup of
both.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
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