> And these rocket scientists were allowed to do no testing at all??? No, the software was extensively tested (but only with Ariane 4 parameters). Skipping tests is a management choice. (In the Ariane case this was heavily influenced by the French attitude "spaceproven is spaceproven". note that in some cases this attitude is actaully better than any bunch of ground tests). Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist