 Many reasons have been offered for why deceptive advertising is wrong. One is the Kantian claim that deceiving others is disrespectful to them, a use of them as a mere means. Deceptive advertising may also lead to harm, to consumers (who purchase suboptimal products, given their desires) and competitors (who lose out on sales). A final criticism of deceptive advertising is that it erodes trust in society (Attas 1999). When people do not trust each other, they will either not engage in economic transactions, or engage in them only with costly legal protections.