According to the art: Florian Zeller, the screenwriter and director, admits he wants viewers feeling what people with dementia feel. He succeeds in the movie as he succeeded in the Broadway play version preceding it.
According to the Art: From this novel, we get a view—Lethem’s—of how Tourette syndrome can affect everyday life and how it can progress; how people with the syndrome can think about it; the balance people seek between benefits and side effects of drug therapies; and whether it’s acceptable to think that some verbal and physical tics are funny.