Professor Dag Svanæs is one of the authors in the new online book, Encyclopedia of Human-Computer Interaction. Svanæs' chapter, the Philosophy of Interaction, has received great commentaries from both Donald A. Norman and Eva Hornecker, and it is currently used as the featured chapter of the book.
In the Philosophy of Interaction chapter you can watch four videos of Dag Svanæs, were he talk about the history of interaction design, and elaborates on concepts of interaction.
The Encyclopedia of Human-Computer Interaction is available for free from Interaction-Design.org. The Interaction-Design.org Foundation produce world-class educational materials by elite professors and elite designers, and give them away for free - to the benefit of both industry and academia all over the world.