Generate text that refutes this claim: Child performers are necessary for roles in some films, television shows, etc., and for the survival of some sports  In some films or television shows, child actors are absolutely necessary in order to realistically portray society and the roles children play. The incredibly popular Harry Potter films, for example, would not have been half as convincing without the large cast of actors under the age of 18 playing the schoolchildren. Child actors are also necessary in the advertising industry, in order to make products appealing to a younger audience. Some sports, too, would be endangered if children were not allowed to compete. Ice skaters and dancers, for example, benefit greatly from training starting at an early age. [1]  [1] Sagolla, ‘Dance Training for Children and Teens’
media modern culture television youth sport house would ban child performers
In a lot of films, television shows, and stage productions, it is possible to have young adult actors playing child roles. For example, in the popular American television show The O.C., the main characters were played by young adults ranging from 18 to 29 years of age but all portraying teenagers. [1] Sports needn’t suffer either: the minimum age of competition for gymnastics has already been raised, [2] [3] and others can surely follow their example without suffering from it. If professional leagues are not allowed to roster athletes below the age of 18, for example, children will compete in amateur and educational leagues where the pressure and commitment is lower, but where they can still train for the professional arena.  [1] IMDB, ‘The O.C.’  [2] Hanley, ‘Gymnastics – Minimum age will soon rise to 16.’  [3] The Telegraph, London 2012 Olympics: artistic gymnastics guide