There are a few ways of looking at this. Most of the more engineery-types are pointing out the inevitability of failure, the challenges trying to find a good enough substrate to mount a touchscreen stack on, and trying to protect an exposed external hinge from impact, and all that material engineering science stuff that's really clever... But well besides the point. I can't even rationalise why anybody wants a foldin…
Look atbhow thick it is when folded. At that size, a normal screen, with a huge battery and a sliding hardware keyboard would much better. For me, it would be an instant buy.