It's common to explain something to someone and then have them ask several questions that were covered in your initial explanation. This is because they were not paying attention. I was thinking about this when watching a stewardess explain the emergency exit protocol for my flight, and I realized that if there ever was an emergency, I was going to have a lot of questions. So, I paid attention. What I found was troubling. On my flight we were going over water, and I learned that, "Most seat cushions can be used as a floatation device in the event of a water landing." What's with this loose "most" talk? I'd like to know if my seat's going to float before I'm bobbing in 4-foot waves next to a flaming airplane. If there's ever an emergency and I ask, "Will my seat cushion float?" they'd better have an answer.