In an interview with the Los Angeles Times, Joaquin said that he was interested in people's reactions and questions about clowns. He pointed out that there is no standard answer because there are many different ways and angles to look at the character and the film.
"People's reactions to this film and what they saw are very interesting. For me, their understanding of this film is correct. "
"Generally speaking, a movie tells one thing accurately, but for this movie, I don't want to say' no, that's it' to destroy this infinite possibility."
For example, Arthur Flack in the movie, like his mother, is seriously delusional. The film ended after the clown killed the talk show host and was imprisoned in Arkham madhouse. The clown's behavior incited the whole violence in gotham city.
But fans will ask, are these things really done by Arthur, or is the whole movie an imaginary story by Arthur?
Director Todd Phillips revealed earlier that he hoped the audience would question the reality when watching the clown, because uncertainty is very interesting. After Arthur became a clown, the whole person became more normal (for Arthur himself), and the illness that he couldn't help laughing rarely happened, indicating that the clown was his most comfortable state.