system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Just how smart is the Joker?

This is a man smart enough to outsmart the Bat yet constantly fail. And while sometimes he is all for killing him, he has also said that he wants to keep him around because he is fun. His decision to screw with Superman created an alternate reality. What is he capable of against other heroes, or even Lex Luthor?
gpt
Well, "smart" isn't necessarily the question. His genius is in his unpredictability. He doesn't outsmart the Bat so much as out-random him. Batman is capable rationale human being when the Joker is anything but. Put it this way, Batman could win at poker against almost anyone by studying their strategies and learning their tells. But play against the Joker, and go all in on a garbage hand and fold with a full house. What's more, he'll deal himself 10 cards and only give you two. If you tell him that's against the rules he won't care and make you play on his terms. 

In the end, he only has one goal - create chaos. Fortunately for him, the destination is also the journey.