🎓 Dr. Freemo 🇳🇱 @freemo@social.cleverlibre.org

Happy Friday!

@freemo I don't like to brag, but I did take some advanced hip hop dance classes back in the day...

I didn't really know what to expect with Mastodon, but less than 24 hours in, I'm definitely a fan. And, to be honest, I don't think I'll miss the sound of crickets that so often followed a Tweet.

Thanks for mentioning me on #followfriday , @klauspforr 🙂

Here are some amazing social and data science people I follow so far:

@cosima_meyer
@KlaraRaiber
@jburton123
@schnizzl
@laraminkus
@gessler
@katjamoe
@relativedevianz
@SoineHannah
@GenevievMichaud

A few years ago, my daughter and I started to write an #atari 2600 game based on Twitter and Trump. We never f8nished it, but here are some screens!

@jonreed Love it, but the line before last and the first has the wrong meter and it throws it off. May I suggest the following variant:

There once was a man called Musk,
Who hollowed the bird to a husk,
We migrated and flew,
To friends old and new,
And now we are fans of the tusk

@freemo @sgul Ah! Let me attempt to answer your actual question a bit more directly.

The Jewish people adopted the Babylonian calendar systems during the Babylonian Exile so for Western purposes we can mark the observance of the Sabbath and a 7-day cycle beginning sometime around 600 BCE. Of course every lunisolar calendar requires intercalary "leap" days to reconcile the lunar and solar cycles so "counting by Sundays" isn't easy over very long timeframes.

The last major revision to the Western calendar was, as others have noted, the switch from Julian to Gregorian, a process that took a couple centuries.

@sgul @freemo Wikipedia says 7-day "weeks" go back to Babylonia, including one day a week for making offering to the gods and avoiding prohibited activities.
https://en.m.wikipedia.org/wiki/Babylonian_calendar

Of course, other systems since have used different approaches including the French Revolution attempting to create a decimal calendar of 10-weeks.

Most calendar systems are lunisolar with the sun's position determining year length and the moon's phase determining month length. Reckoning weeks was more or less optional and of little interest.

And since prehistory is, by definition, before anything was recorded we can only speculate from limited findings how, or even if, time was recorded. It seems likely that some tribal leader made scratches on something to tally lunar months and maybe solar years.

@freemo@qoto.org

Me too

@freemo
https://www.goodnewsnetwork.org/

@freemo is the lighter light lighter when you're lit? Cause you can lower the lit lighter light lightly a little.. unless it's a Zippo.

@freemo Agree, #programming in #haskell is exhilarating. One of my favourite papers ever on applying #haskell for fun and profit: "Exploiting vector instructions with generalized stream fusion" by Geoffrey Mainland et al. 2013 https://dl.acm.org/doi/10.1145/2500365.2500601 where the authors "describe a stream representation suited for efficient computation with SSE instructions" which compare favourably to C++ implementations.