Going into college, I thought I understood all of the different ways poop could look. My digestion is generally bad, and my eating habits don’t help. But after returning from a four-day-long river trip, I realized just how naive a pooper I was. You’ve probably read every raw water take possible by now, so here’s just a quick reminder. Con artists are trying to sell unfiltered, unsterilized water at a premium to rich idiots.