> They are very versatile - you don't need to define all your inputs up front, instead you can add new controls dynamically as needed That's pretty much the la

> They are very versatile - you don't need to define all your inputs up front, instead you can add new controls dynamically as needed That's pretty much the last thing I want. I really like the turn page buttons on my Kobo. My previous kindle did not have them and it was a pain. Somethings like iPod wheel can replace a lot of current touch screen interactions (it's technically touch, but could be a dial) in small screen. > I also think there's a big advantage to the vertical form factor for many applications - just look at how we've settled on a vertical format for almost all reading material My non scientific answer is that it tiring to read a long line. A smaller width gave us more visual landmarks to rest our eyes on. And yes, a vertical form is easier to hold in one hand, but with how big phones are getting, most interactions is two handed. > it is largely accessible, it's convenient, and people find it convenient to use. And that's their only strong point: convenience. Ergonomics for a particular task does not translate well to others. If you only have to do one task, a smartphone is always the worst choice. A smartphone is more accidental usage than planned usage. If I know I'm going to take a lot of photos in an event, I want a camera, not a smartphone. If I'm going to write all day, I'm bringing a laptop, not a smartphone...