“…Since Berkeley's famous essay on vision (Berkeley, 1709(Berkeley, /1732), theorists of perception from different disciplines have defended the idea that the experience of spatiality may proceed from an interpretation of sensory information through reference to the possibilities of action (e.g., Bergson, 1896Bergson, /1912Gibson, 1979;Husserl, 1907Husserl, /1973Merleau-Ponty, 1945;Poincaré, 1907Poincaré, /1921. To date, convincing arguments in the empirical sciences have been provided supporting the view that the perception of the external world is under the influence of, or even scaled by, actionspecific constraints (Barsalou, 2008;Fajen, 2005;Gallese, 2007;Witt & Proffitt, 2008), when, for instance, walking through obstacles (Warren & Whang, 1987), climbing stairs or hills (Bhalla & Proffitt, 1999;Warren, 1984), or manually interacting with objects (Carello, Grosofsky, Reichel, Solomon, & Turvey, 1989;Witt, Proffitt, & Epstein, 2004).…”