Why are fortune tellers so magical?

Fortune-telling is a summary of various laws for thousands of years. Could it be fake? Maybe it just lacks sufficient theoretical support. Of course, since it is only a summary of various laws, there are naturally events beyond the summary law. Coupled with the lack of information and other reasons lead to errors, just as doctors' diagnosis of patients may not always be right.

Just like some students fail in the exam, of course, some fortune tellers are not skilled and may make mistakes. Besides, some of them are completely deceptive.