Exactly what you said about foot pain. My buddy Dave bought one of those pricey standing desks last year and swore he was gonna be a standing convert. Day one he sends me a pic standing at it looking all proud. Day three he's texting me at 10am saying his heels felt like they were made of rocks. By the end of week two he'd stacked a bunch of old textbooks on it so he could sit on a bar stool. Now he just uses it as a regular desk with a chair and the whole standing thing is forgotten. I think your point about most people not actually standing that much is the real killer.

Man, I gotta disagree with you @joel280... calling it a main line isn't dramatic if that's literally what it feeds. Chewed up coax in the wall is still a hassle even if you can fix it fast.

Bartender here once used Windex on a tap line, same energy.

That 1.0 mils number is honestly crazy to think about. I've seen those engines up close and they're not small things, so the idea that we're measuring movement down to 0.001 inches is wild. You're right about the hair width comparison, I've heard that before and it still blows my mind. I remember watching a mechanic once check a vibration reading on a test stand and he told me the whole thing was basically riding on a film of oil thinner than a piece of paper. Makes you wonder how anything even stays together at those tolerances. I'd be holding my breath the whole time too.

Back in 2019 I watched a guy do ironed joints on a whole basement remodel near Akron and by last spring every single seam had this spiderweb pattern of cracks through the tape. The thing nobody talks about is how ironing just presses the mud into the board instead of locking it around the tape edges, so you get this weak bond that pops over time. Buttering forces the mud to wrap around the tape fibers on both sides, which is way more stable when the house settles or the seasons change.