Paris: I can't get anyone to write their names on their cups and use them again. It doesn't seem that hard. Open sharpie, write name.
Rory: Maybe people don't want to reuse a paper cup.
Paris: Well, then, hopefully people who don't want to reuse a paper cup won't mind buying SPF5000 for their grandkids when the rainforest is gone and the ozone layer is a doily and the human race is bursting into flames.
Rory: Maybe we could just tell everyone to bring a mug for their water.
Paris: We could, but they won't bring a mug, just like they won't properly proof their articles or double-check their sources.