If you look at old pictures of horses, buses of the nineteenth-century in London you will see men carried advertisements of products that are famous even today. It is a good evidence of effectiveness of advertising. Thus our modern world depends on advertising. Producers and distributors would be unable to sell anything, buyers would not know about products and remember some goods or services. Our modern industrial world would collapse without advertising. If factory’s output is large, advertising will maintain profits. So advertising must be powerful and continuous. Mass production requires mass consumption which requires organized advertising through the mass media.