There is a really interesting Q and A conversation with Jesse James Garrett over on the WELL.

Jim Leftwich leads the discussion and takes a look at Jesse's model of The Elements of User Experience beyond the scope of the web. In one of the comments he says to Jesse:

“So you see, your model for the Element Planes fits perfectly well with the
reality of interaction design as pertaining to product design. That's what
most amazing and satisfying to me. Your model represents a major step in
understanding not only the issues involved with website interaction design,
but for interaction design in general.”

Pretty neat. Jesse's model is specific enough without being too specific and general enough to be applied across various flavors of interaction design. That's why I think it has resonated so much with so many people across so many areas of this type of work.

This is a good read and provides some interesting answers to a lot of great questions submitted by various other WELL readers in addition to the primary discussion leader.