Look at this thing. (Reminds me of my late, great Handspring. I’d synch it at home with some software called AvantGo, to get some news to read on BART. Had another cradle at work for the return trip. Nice monochrome screen and all.) This is the HP Jornada. It’s the centerpiece of a story called “Microsoft’s Lost Decade in Mobile.” How can you lose an entire decade?