It’s almost idiot proof until you mix up the manual valves and the rooster combs.
During my days in engineering we would spend MONTHS trying to make something IDIOT PROOF. Usually the 1st person would do something we hadn't expected.
🎯🙄😳🤣🍻
because engineers don't think like regular people.
I had a job where we made software for doctors.
I told them you can't build it like this, they will screw it up.
I got told, that they must be smart because they are doctors and let it go.
of course the doctors broke it.