it starts out so beautiful but it can get so .... twisted https://ncatlab.org/nlab/show/twisted+cohomology
haha algebraist brained corn meme
derham cohomology is important for dat so enjoy!
conditional extrema, differential geometry
calculus of variations on manifolds? physics detected 
ahh i want a lever espresso 
for me its pourover when i wake up and moka pot later in the day, mostly because the latter is convenient to do on my little hotplate near my desk.
NO INVESTIGATION, NO RIGHT TO SPEAK
Unless you have investigated a problem, you will be deprived of the right to speak on it. Isn't that too harsh? Not in the least. When you have not probed into a problem, into the present facts and its past history, and know nothing of its essentials, whatever you say about it will undoubtedly be nonsense. Talking nonsense solves no problems, as everyone knows, so why is it unjust to deprive you of the right to speak? Quite a few comrades always keep their eyes shut and talk nonsense, and for a Communist that is disgraceful. How can a Communist keep his eyes shut and talk nonsense?
It won't do!
It won't do!
You must investigate!
You must not talk nonsense!
that pic is hard
here's some background information and speculation, as someone not involved in the industy.
the silicon wafers used for making chips are big single crystals, which are made by the Czochralski method
the crucible is also made of silica and needs to be very perfect, so that no crystals are seeded from the walls, so it makes sense to me that the crucible needs to be at least the purity of the desired silicon wafers - which is at least 99.9999% pure and for research-grade samples 99.99999999% pure. I suspect that the leading-edge nodes requires the high-end of this scale. Its economical to start with the highest purity material that you can, which according to Conway's Material World comes from spruce pine, but its possible to use a lower grade starting material.
it seems like every time i search for anything it comes up with a million ai-generated wordpress pages with the same basic structure. obviously being churned out as someone's "passive income" scheme. I wonder if there is a search engine with a way to filter out all wordpress sites...
taken out by the same "hard drive failure" as leftypol. "We are still hoping to get access to the backups once the old admin sees that we need him to give us access."
you can save posts?