Have you seen Firefly? I have. I love that show. Whedon's "used future" conceptions are second only to the Star Wars universe. In this world, the two dominant language cultures are Chinese and English, space ships can be cheap junkers like someone's first Honda is today, and crime bosses can toss around amazing, full-color, flexible displays like they're nothing. This is the future I want. To be very clear, PaperTab, while a great-looking concept, is not going to be taking us there.
"Watch out tablet lovers!" is how the description for the video starts. Given what we end up seeing, I can only interpret this as a warning shot.
While the boom in the tablet market has certainly seen a gold rush from manufacturers eager to capitalize on the new craze (whether it be with Android or Windows RT), there's an equally-eager market that's attempting to cash in: accessories. Some of them are great, some are bafflingly weird. The PadPivot probably sits somewhere in between. This little thing is designed to fold up and easily slip into a pocket or purse. When you need it, you can unfold it, set it up, and prop your tablet on a makeshift stand that fits comfortably on your knee.
So, it's as normal and useful as a thing can be that's designed primarily to be used by your lower thigh.