And I'm sure Microsoft iterated with the tablet PC. Blackberry iterated and look where it got them. I think Gruber is arguing that the concept may be sound (ju

And I'm sure Microsoft iterated with the tablet PC. Blackberry iterated and look where it got them. I think Gruber is arguing that the concept may be sound (just like tablet form factor computers, portable MP3 players, and smartphones), but the implementation is probably shit. The reason everybody carries around something that looks more like the 2007 iPhone than the 2007 Blackberries is that Apple didn't iterate. They took the concept and completely rethought it. Somebody may be able to do this with Glass. Who knows—it might even be Google!