Related point: at the same time that the machine allows me to be more efficient, and to be more precise without being rude, it also lets me be less efficient wi

Related point: at the same time that the machine allows me to be more efficient, and to be more precise without being rude, it also lets me be less efficient without being rude. An automated kiosk doesn't care how many times I ask it the same question, and doesn't feel like I'm jerking it around if I cancel out of buying a first class upgrade when I'm at the final confirmation screen.