In the other haptic interface, a single hand lightly holds a goose feather dipped in ink. This tool makes use of no bold physical gestures and in fact ceases to work if the user’s body is in motion. Much like the touchscreen interfaces that Bret Victor frets about, this goose feather forces the user to a limited range of gestures with just one hand. And the output is only words.

As for the comparison: someone famously wrote about which of these interfaces is mightier.

Moving into the future, interaction designers should remember that simple interfaces are often the best. More importantly, the true worth of an interface is often expressed by how it fits into the world. (Microsoft’s vision of the future: more sloppy info provides a good example.) Don’t get too wrapped up in tactical details or new features. The best experience in the future may very well come from something old and mighty.

[And continuing my own theme, people love when technology fades into the distance. When things “just work”. If it doesn’t do that, it’s not what it should be.]
Source: Good Experience Blog