But, it's really the space in between. We spend most of our time working these boxes, NOT clicking. People who use computers are affected by them. We see this in traditional media. You go to a film, you read a book, you look at a painting, watch performance art.
Interface is the point of contact between the person and the content.
It's the boundary and the bridge between those two. So it shouldn't be surprising that people not only take multimedia content with them into their everyday lives, but they take the interface metaphors and the interaction styles with them in their bodies out into the world. Edward Tufte pointed out that there are only two industries that call their customers users. The trick is looking at what the people are actually doing. We want to call them a viewer, a reader, a participant, a player.