• stoly@lemmy.world
      link
      fedilink
      arrow-up
      2
      ·
      4 months ago

      Back in the day you did the math in your head and gave back change. If there’s a line, it’s easier and faster for you to pay a few cents extra so that the cashier can give you back a single nickel instead of multiple pennies. This is really about how many physical actions you need to take.