A buddy of mine watched one of those delivery bots get stuck trying to go up a curb last week. It just kept beeping softly and turning its little wheels, like a confused turtle. Some guy in a suit finally came over, sighed, and just picked the whole thing up to move it. My friend said it was the most normal weird thing he'd seen all day.

Four minutes is key for French press. I rushed it before and got sour brews. Setting a timer made all the difference.

About your buddy with the calipers, I get the joy of a new tool, but digital calipers have been the standard for a long time now. In my shop, the real game changer was ditching the old height gauge for a digital one with a nice base. No more adding up stack blocks and hoping you read the vernier scale right. It went from a fifteen minute guess to a two minute sure thing.