Herd behavior makes individuals believe that the behavior of a majority is the correct and profitable behavior, even though there is no proof that this behavior actually generates positive results. In other words, we can say that this behavior acts according to the population, for no reason. For example, this behavior causes an individual to start sunbathing to get rid of baldness, because a large number of people are doing this, even though there is no scientific evidence that sunbathing actually inhibits baldness.
