Grass fork effect

It's ugly to be crossed by grass It means that if you are biased against someone, you will naturally believe that everything he says and does will not work. Even if it turns out that he is right, you will think it is just a coincidence.

Halo effect

The light ring of the sun. It means that if you are partial to a person, you will naturally believe that everything he says and does is correct, which will make the facts prove wrong and think it is just a coincidence.