For tablet computer visionary Roger Fidler, a lot of what-ifs

Of course, this ignores a lot of prior art: for example http://www.ubiq.com/hypertext/weiser/UbiHome.html

I'll say it again: Apple was not the first to invent the tablet, they were the last, and that is precisely why they succeeded.

1989: http://en.wikipedia.org/wiki/GRiDPad

"black, thin, rectangular, with text and video displayed on-screen"

He better stay away from rounded corners.