Dan Saffer’s new book "Designing for Interaction", will be available in August. Interview excerpts of the  are now available on the promo site.

From the site, interaction design pioneer, Robert Reinmann, on acceptance of personas in design process:

" As for past controversy, I think that any new idea meets with some resistance until it reaches a tipping point. Some people didn’t think personas represented anything new. Some didn’t believe in the value of qualitative research. Some didn’t pay attention until persona methods were published in academic journals. Some had methodological  quibbles. And some designers thought (and perhaps still think  that personas constrain creativity. This last objection I could never personally understand."

(Thanks Mauro)