The road to Zettalinux [LWN.net]

The road to Zettalinux

Posted Sep 23, 2022 16:15 UTC (Fri) by schuyler_t (guest, #91921)
In reply to: The road to Zettalinux by adobriyan
Parent article: The road to Zettalinux

I'm gonna be that guy and point out that there's no way we know the exact time of the moon landing to the femtosecond, so I wonder how he picked what 0 is.

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The road to Zettalinux

Posted Sep 23, 2022 18:26 UTC (Fri) by Wol (subscriber, #4433) [Link] (1 responses)

I'll be that other person to ask "how often do satellites need femto-leaps just to stay in sync?" Maybe they don't, but at that scale? Maybe they do, at which point the question "at what femtosecond did the moon landings happen?" no longer makes physical sense ...

Cheers,
Wol

The road to Zettalinux

Posted Oct 11, 2022 18:43 UTC (Tue) by reubenhwk (guest, #75803) [Link]

Why since the moon landing? Why not make 0 the femtosecond just before the big bang?

The road to Zettalinux

Posted Oct 11, 2022 19:12 UTC (Tue) by adobriyan (guest, #30858) [Link]

The streams are here:
https://www.youtube.com/watch?v=FjJDyIxIC5U
https://www.youtube.com/watch?v=qGW7sEgyfsw

IIRC, there was a small debate if start time or landing time should be used as epoch.

Due to general relativity all of this is probably moot.