For his informative speech, Douglas told his classmates how to get free food at a drive-through restaurant. Rather than focusing on legitimate deals, such as student discounts of coupons, Douglas talked about ways to trick employees into believing you had already paid for the food when you hadn't. His instructor gave the speech a poor grade because it violated the ethical criteria for public speaking presented in your textbook. What guideline was violated?
Make sure your goals are ethically soundq