TEI 2011 Keynote: Bounce Back by Gilian Crampton Smith
“Overall the argument was that embodied interaction works because it draws on knowledge we have. An example is that two physical things cannot be in exactly the same place and another one is that things stay where they are if there is no force moving them. There are clear limitations to the interaction with physical objects that give indications how to use it; she referenced a paper on an exploration of physical manipulation.” (Albrecht Schmidt – User Interface Engineering)