The backups are on a separate system with different credentials. One copy of the backups is sent to online storage that is immutable. You set a retention policy and then you can’t delete, overwrite, or change the backups.

I tried to buy a BifL non-stick pan and found that it doesn’t exist. Everything marketed as non-stick has some coating that will wear off and become useless. “But what about {brand that says it’s not PTFE, PFOA, or PFAS}?” Yep them too. Look up sol-gel non-stick coating if you have ceramic non-stick. If you don’t want to have to buy pans over and over again, you have to go stainless, cast iron or carbon steel. Cast iron enamelware is pretty good too, but isn’t really non-stick. I’m in the process of finding stainless/cast-iron replacements for all my non-stick pans.

Yeah, she was a very smart person, IIRC she was studying aeronautical engineering, literally a rocket scientist. Just one of those weird ways that you don’t think about your bias until it smacks you in the face.