Can't it be both? It's pretty obvious that a rising minimum wage would increase McDonalds costs. As min wage rises, at some point, assuming the average customer

Can't it be both? It's pretty obvious that a rising minimum wage would increase McDonalds costs. As min wage rises, at some point, assuming the average customer is indifferent to how their order is taken, it will make sense to have fewer cashiers and more kiosks. You're making an assumption that everyone just prefers a computer to a person. I personally always go to the cashier and can't stand the kiosks.