Is Zhuge Liang's bone mass fortune-telling accurate _ Zhuge Liang's bone calculation

Whether fortune telling is credible, whether Zhuge Liang can tell fortune, how can he be so accurate?

1) Fortune telling is not credible and has no basis. .

2) Zhuge Liang can't tell fortune, but Zhuge Liang knows the array method and has strong reasoning ability. Isn't Cao Cao's Guo Jia also very accurate?

3) The Romance of the Three Kingdoms deified Zhuge Liang. That's why it's so accurate.

4) If Zhuge Liang had really come up with a plan, the defeat of Jieting would not have happened at all, because Zhuge Liang also had powerful Zhao Yun, Wei Yan and Jiang Wei. It's not that there is nothing.