How to scientifically convince others that "the constellation determines personality and is unreliable"?

Then we can introduce Barnum effect, which is the astrological effect. Barnum effect means that when people describe a person with some common, vague and extensive adjectives, people tend to accept these descriptions easily and think that they are talking about themselves. Even if this description is vague, they are not such people, and they will firmly believe that it reflects their character.

1948, psychologist Vla gave students a personality test, a personality test about personal analysis. The test results show that students' personal analysis is the same, and most people think that the same statement describes themselves well.

It's not hard to explain. First, many constellations are so vague that people can understand them from almost any angle. Formal psychological tests have scales to measure the degree of personality characteristics, but the theory of constellation analysis is indisputable because it is not rigorous and unmeasurable.

Secondly, people tend to praise themselves, even if they know that the content is inaccurate, they will convince themselves. When I first read those horoscope tests, I felt that the character written by my horoscope was very consistent with my own. I will ignore or tell myself that some contents are inaccurate, and none of them is normal for me. But in fact, the characters described in most constellations are general. You can find what you think of * * * by substituting yourself into the description of which constellation.

The third is that once people believe it, they will start looking for evidence. When I see those descriptions, I will start to recall what I have done before and look for behaviors that match it. Once there is a behavior that matches the description, I will believe that I am the person described by the constellation personality.

Explain the above three points, I think most people will believe that "the constellation determines the character is not reliable."