After chancing to see the book at the FLOP (free library of Philadelphia) i checked it out to check it out. Basically, the authors are complaining that the metaphor of the desktop for our personal computing and organizing information is insufficient for the demands of life. Good point, but they don't argue persuasively that something is 'just around the corner' like many "tech-savvy" books always proclaim.
This work was meant to be a bit more academic and theoretical (did i spel that write?) in order to i guess present and stimulate deep thought about alternative metaphors for working with computers. I found the examples thoroughly explained and the book well written. But after about 3/4 of the book i got the point and didn't want to pore over the details of the rest of the book. i hope i didn't miss anything.