I really don't agree with any of your examples here, or the combativeness of your comment. Roof work is usually a fair bit more deterministic than software. F

I really don't agree with any of your examples here, or the combativeness of your comment. Roof work is usually a fair bit more deterministic than software. For car work, it's not uncommon where I am for the tire guy, the vehicle inspector guy, or the guy who knows how to work on my brand of car to have unavailability. My dentist has scheduled work earlier in the week with the explicit intent that if something goes wrong, I can be seen quicker. I appreciated this gesture, even if it wasn't exercised.