Writers in film, television and other media can sometimes be lazy people who cannot be bothered to do proper research on subjects relevant to the plot of their work of fiction. At other times (especially in TV), they just cannot squeeze research into the 10 days or so they get to write a script. In other cases, putting in too much detail would be distracting and annoying. In any case, the research did not get done. Often these mistakes will be so glaringly obvious to anyone with any sort of basic knowledge of the subject that it will make the entire work seem completely ridiculous. Subindexes: