I just signed up for bluski, and it offered the option of running it from my own server. So decentralization appears to be possible. The more people use this option, the more decent it will be.

It was some time ago that I read of that, so the details are fuzzy. And here's what I found:

https://nypost.com/2019/07/25/10000-year-old-engraved-stone-could-be-worlds-oldest-lunar-calendar/

“A 10,000-year-old engraved stone could be a lunar calendar. The rare pebble — found high up in the mountains near Rome, Italy, the hammer-stone was found on top of Monte Alta in the Alban Hills. It’s believed that our early ancestors would’ve used the stone to keep track of the moon’s cycles. Notches were engraved “as if they were being used to count, calculate or store the record of some kind of information. And these notches — which total either 27 or 28 — suggest the stone’s engraver used the pebble to track lunar cycles.” ref

It could also have been The Ishango Bone (https://www.thedailybeast.com/the-ishango-bone-the-worlds-oldest-period-tracker/)

Cool, well I could just give up, but that's not my style. So point of use filtration for now, and keep working on solving the larger problems piece by piece.

still projecting, I see.

Hrm, my state reps voted yea, nay, and not voting. Got some letters to write.

No argument there. This crap should not be in our environment at all. How do we get 3M, DuPont, etc to pay for our filters?

governmentsecrets.pdf , Ha! Gotcha!

Lock and redirect seems like a good idea. Duplicating efforts spreads our effectiveness thinly.

I got locked out of twitter years ago pre-musk. Would have deleted my account, but it was a hassle. So I left it behind like the POS it was and still is. Onward!

When you said "only the most expensive", I got concerned. Then I went to the website (https://cyclopure.com/product-category/store/), and see the countertop Purefast cartridge is $40-45. So I wonder what you are actually finding problematic here?

From your first link. second paragraph: "“These $45 filters can provide up to 65 gallons of PFAS-free water, replacing 700 single-use water bottles,” said CycloPure chief executive officer Frank Cassou. The cartridges will be available in early April 2022."

I know this will shock everyone, destabilize the entire Xitter platform, and here goes... I will no longer post there, either.

FOSS Period Tracking Apps Exist: (there may be others, as well)

https://fossdroid.com/a/bluemoon.html

https://fossdroid.com/a/mensinator.html

https://github.com/TotallyMonica/foss-period-tracker

Also paper and pencil.

Also the oldest known "writing" is a stick with 28 notches on it.