T H E U N I V E R S I T Y O F E D I N B U R G H School of Informatics, University of Edinburgh Centre for Intelligent Systems and their Applications On differences between the real and physical Plane: Analysis of the inside relation by Daniel Winterstein Informatics Research Report EDI-INF-RR-0208 School of Informatics December 2003 http://www.informatics.ed.ac.uk/