Joel VanderWerf

Mathematician. Applying semigroup theory to distributed computing, convergent replication.

Might move here from: [@joelvanderwerf@mastodon.social](https://mastodon.social/@joelvanderwerf )

Last Notes

2026-09-08 00:41:51 UTC

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If the mayor and Scott Wiener had their way, we would never have been allowed to vote for:
* Prop J, Nov 2022: JFK bike/roll/walkway. Passed 63-37!
* Prop D, June 2022: Legal services for survivors of domestic violence. Passed 59-40!
* Prop E, Nov 2019: Ease approvals for projects containing 100% affordable housing or educator housing. Passed 76-24!!
Don't let the mayor, Wiener, and supes be the gatekeepers saying NO to good ideas.
Don't let them block popular bike and housing initiatives.
#SanFrancisco #Politics

2026-09-08 00:41:11 UTC

RE: https://federate.social/@MBridegam/117231827850625009
If you vote in San Francisco, please pay attention to Prop D, the mayor's attempt to take away your vote.
It may sound fair to prevent a 4 member minority on the Board of Supes from putting a measure on the ballot where we can all vote for or against it.
But see the research below about the recent history of measures that got on the ballot this way.
All six (!) of the minority-placed measures since 2019 went on to win the popular vote, some with large popular majorities.
#SanFrancisco #Politics
#note1rw8…q80v

2026-04-26 20:29:17 UTC

"When Amazon ran a “counter-sale” last year during Independent Bookstore Day — an annual event that takes place the last Saturday of April — the move backfired. The giant triggered a wave of support for independent bookstores that gave many their biggest day of sales — ever. People are more aware now that how and where they spend money is powerful. Booksellers see that up close."
https://www.mercurynews.com/2026/04/25/opinion-a-boom-of-independent-bookstores-just-when-we-need-them-most/?share=tnm0encehteeeaiwin0b

2026-04-10 03:46:56 UTC

#SanFrancisco #BakerBeach
https://files.sfba.social/media_attachments/files/116/378/354/448/809/926/original/891c833fd5c13271.jpg

2025-11-24 18:57:07 UTC

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I concur.

2025-03-04 00:50:01 UTC

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we have to call it trumpcession

2024-09-14 18:11:48 UTC

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Maybe it's related to "GFY coin". Which is probably also his fault!

2024-09-14 17:46:53 UTC

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Wait a minute, that doesn't look like the building at 9th/10th and Market!

2024-07-30 17:34:24 UTC

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What's happening to the sand in that area is very interesting. Currents or something have shifted sand so that at low tide you can walk all the way around that little pier at low tide. I've never seen that before.
https://sfba.social/@joelvanderwerf/112780256488978007