I had to derive osmotic pressure for my statistical mechanics exam in my bachelor’s. So in what sense don’t we know?

There’s also WYGIWYW (“What You Get Is What You Want”) and is primarily used for latex, because you give up some manual control for a (allegedly) better looking result.

CP symmetry has been experimentally measured to be violated. What we still believe is that our world is invariant under CPT symmetry.

Correction: It’s Sagittarius A*

I host Nextcloud on Hetzner. It’s about 5€ for 1TB. You have the privacy of Nextcloud, but they upgrade it for you and so on. Just a heads up: You don’t have access to the shell on the machine.