If one is trying to understand the written word or an observation with the part of the brain that processes emotions, there's a much lower likelihood that they will be able to comprehend what they're reading or seeing. If you don't like, are jealous of, or fear women, for example, you're not going to be able to understand what a woman is saying. If you don't like another race, you aren't going to hear what someone of that race is saying. Etc, etc. If you're afraid of dolphins, you're not going to be able to interpret their behavior or observe them objectively.