Hollywood aren't always realistic but sometimes the morals or the message can be implied to the real world . Movies such as Spider man or Batman aren't realistic but the morality of the film is such as the line from spider man with great gift comes with great responsibility which is true. The ability to do anything comes with responsibility.On the other hand , scientific movies or based on a true story are somewhat realistic because its based on events that can happen. On that thought i think sometimes Hollywood can be a reliable source depending on the movie or genre.