One of the diagrams under the bit about snapshotting has a typo reading "snapthot" and I immediately thought it was talking about instagram. (I realize now aft

One of the diagrams under the bit about snapshotting has a typo reading "snapthot" and I immediately thought it was talking about instagram. (I realize now after writing it that maybe snapchat should have occurred to me first, but I have never used it)