I am very, very old-fashioned and clumsy. I use those long reporter notebooks. This is what a troglodyte I am. The night before I go off on a trip, I take a scissors, I pull out about four of these things, and I cut off the bottom inch and a half so this thing is only that long. You know why? Because it fits in a zip lock bag if I do that.
We're shaking loose viruses and dislodging them from their natural ecological limitations, places where they aren't very abundant and have competition, even within a single animal. We introduce them into a new, rich habitat called the human population, where they can flourish more abundantly and cause more trouble.