Why are fortune tellers sometimes accurate? What are they based on? By feeling?

Fortune-telling is very accurate, and all I can think of is a few points.

1. According to their textbooks, reciting, understanding and playing are their theoretical sources.

2, good observation ability, this ability is no exaggeration to say that sometimes it can be comparable to psychologists. They will not only observe each other's facial expressions, but also infer each other's psychology. And rarely say anything that is not very certain, so there will be more loopholes.

3, eloquence is good, we now have a lot of salesmen's eloquence, we can't get in a word? Once when we applied for a job, the manager told us to finish our sentences in one breath, never giving the other party time to think and a chance to react. But also have enough confidence to scare each other, that is to say, talk big. (Hehe ... but I have no eloquence)

It's hard to say whether there is a scientific basis. The ancient culture of our country is profound, and there are some things that we can't explain. For example, Zhouyi culture, but it needs considerable knowledge to study, and not everyone can understand it, let alone Jianghu fortune telling.