It works for hardware, because that's the only way to do it. There's no 2 populations for hardware. All decisions are one way doors. Software must use feedback

It works for hardware, because that's the only way to do it. There's no 2 populations for hardware. All decisions are one way doors. Software must use feedback, otherwise you'll end up with duds like Camera Control, 3D touch, and .. Apple Maps (1.0). Apple doesnt have that culture, and it shows in their software.