system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do fortune tellers know what to say to you?

I don't believe in fortune tellers but i'm guessing there is some trick in order to guess information about people in order to "tell their fortune/horoscope"
gpt
Fortune tellers do what's called cold reading, picking up on little nicks and things that you physically show. They are also great at reading on your vulnerabilities such as emotions.

They then attempt to predict, based on information that you have provided, try to create a crazy, but understandable fortune that can actually occur, such as the death of a loved one or you going bankrupt, not that dragons appear or Thor comes down from the heavens. If that person is really vulnerable they'll accept that information and then believe that's going to happen. Placebo effect takes place and they start acting like it has been foretold to happen. Then it actually happens because of the person's actions and they believe that the fortune teller was right all along.

It's all bullshit and they are just really good manipulators and they interpret information really well.