Are psychological thinking mistakes people can make. These errors allow us to make systemic deviations from what would have been the most rational perception, assessment and decision. Such situations can occur when the brain has to simplify information when interpreting and sorting it. It can also occur when you have to act spontaneously based on your inner intuition, often without you having thought about it properly.
Such cognitive biases can lead you to avoid and absorb information that is contrary to existing perceptions of reality. You will then be determined on your own perception of the situation instead of changing your mind.
There are several such cognitive biases, and it is almost impossible to be affected by them. Regardless, it helps to be aware that you and your brain are constantly being affected by this. Being aware can make it easier to look at "other aspects of the matter", even if you have decided that your opinion is correct.