It's fairly easy to set up situations where the people doing the actual work are not knowingly defrauding anyone. The salespeople are told the machine is real, the delivery people never see inside the lab, the testers inside the lab are trained by the few people really in on it (I don't think they had the proper independent training) so they don't know how bad the tests are, and the scientists think everyone knows they're working on version 2.0 but they're told not to discuss readiness, leading the salespeople to get the wrong idea. Heck, most frauds don't want their people to know that it's a fraud - too many people raises secrecy and conscience issues.
