We have physical interlocks all the time and they make intuitive sense to us. If you park you car, and crank the steering wheel all the way to one side, it won

We have physical interlocks all the time and they make intuitive sense to us. If you park you car, and crank the steering wheel all the way to one side, it won't start unless you put it back. If you have an automatic transmission vehicle, if you turn the key without pushing the brake, it won't start. If you have a manual, it won't start unless you push the clutch in. (This didn't used to be true. Citing Ferris Bueller.) Lots of stuff goes wrong when the hardware people depend on the software people for correctness and the software people depend on the hardware people for correctness. Insert <Group A> and <Group B> for hardware and software. Could easily be writers and editors in journalism.