Chris Dixon wrote a very smart piece on mobile this weekend. A lot of the things he talked about are things I’ve talked about. One I haven’t talked about as much, but have been thinking about, is based on this excerpt:

If you go back and look at the history of productivity apps you’ll see that each major user interface shift led to new classes of productivity apps.

Actually, each generation of technology has meant a new winner, not just new apps. In the hardware days, it was HP calculators. In the DOS prompt days it was Lotus 1-2-3. In the mouse days it was Excel. Something will dominate in the touch era.

Same is true for word processing. In the DOS days it was Wordperfect and in the mouse days it was Word.