Publicity, Is it always true?

Publicity is an important part of business and we really have to pay attention to it because it keeps us informed about the new products that are on the market . It influence the customer decision. An advertising shows the public what they want in a product but it is not always true, usually it exaggerate about what the product can really offer. When I see an advertising on TV I am not sure if what they offer is a 100% true, but there is not doubt that some part of the information is telling the truth.