Appeal to Consensus

The fallacy of appeal to consensus argues that the hearer should accept the conclusion merely because many other people supposedly accept it. A great deal of advertising uses this approach. One commercial proclaims, "It's the Pepsi generation!" This implies that an entire segment of the American public can be identified as connected with a certain product. With so many people presumably committed to the product, what right do you have to deny that it's the best thing for you?