Arthur Fleck is Joker. That’s the name of Todd Phillips’s 2019 film and Joaquin Phoenix’s well-deserved Best Actor Oscar-winning character. Arthur must be a Joker, a self-made stand-up comedian. He must laugh, even though his heart is breaking. And, being a comedian is the best way to keep laughing. Isn’t that right …? No, he’s not successful at it. But, laughing is a must - for complicated reasons that unfold as this disturbing film escalates to a confusing and shattering end. Confusion about what’s real and not, what’s funny and isn’t - is where Arthur lives. Joker says it clearly:...