Selmer Bringsjord Micah Clark For Problems Sufficiently Hard ... AI Needs CogSci. 23-26 2006 AAAI Spring Symposium: Between a Rock and a Hard Place: Cognitive Science Principles Meet AI-Hard Problems http://www.aaai.org/Library/Symposia/Spring/2006/ss06-02-007.php conf/aaaiss/2006-2 db/conf/aaaiss/aaaiss2006-2.html#BringsjordC06