The power of defaults
The snack machine in my office building gets a steady flow of patronage throughout the day. Last week I used a dollar bill to buy a 50 cent pack of gum and noticed that the 50 cents I was owed wasn’t returned automagically. I then hit the coin return button and the machine coughed up my change. Somewhere out there, there’s a genius that revolutionized the vending machine industry by changing this default. I’ve left at least an extra dollar in the machine since I first noticed this change last week. Brilliant.
Edit: So it turns out I was totally wrong about this. My dreams of a revolutionized snack vending machine industry have been shattered. Thanks to bostonwolf’s comment I realized had assumed the machine retained change. I was wrong. If there is change owed after a transaction, the machine spits up the change in the coin slot ~2 minutes after the purchase. Too bad.
Does the vendor benefit, or does the next person to use the machine?
I guess both would.