This book discusses engineering insight, and describes problem solving using a combination of math and intuition. Don't start reading it if you wish to accomplish anything else today. http://mitpress.mit.edu/books/art-insight-science-and-engineering --=20 Regards, Mark markrages@gmail --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .