The IaCa system, by Basile Starynkevitch a free software (GPLv3 licensed). See file COPYING3 for the license. Dedicated to Jacques Pitrat and his CAIA system. To learn more about CAIA, read Jacques Pitrat's book Artificial Beings The conscience of a conscious machine Jacques Pitrat, LIP6, University of Paris 6, France. ISBN: 9781848211018 Publication Date: March 2009 Hardback 288 pp. http://onlinelibrary.wiley.com/book/10.1002/9780470611791