Why don't fortune tellers sometimes tell fortune?

Why is fortune telling sometimes accurate and sometimes inaccurate?

Fate "is destiny takes a hand's saying, you can't say that." It is the product of the restrained evolution of Yin-Yang and Five Elements in nature. Like other things in nature, it is influenced by the movement of celestial bodies and is not determined by the will of fate. The reason why we can accurately predict people's past and future is because we understand and master the laws of celestial bodies and the process of restrained evolution of Yin-Yang and Five Elements, so we can have an accurate prediction result.