To say that everything we hear is an opinion and everything we see is perspective is incorrect. As it is with many problems, there is a grey area and nothing is for certain. The statement itself would then be contradictory if it is held true because then that statement would be an opinion as well. I think that everything is a mixture of facts and opinions.
I can say for certain that if you hear someone say "I hate math." you would say that it is that person's opinion on math. However, it is also a fact about the person; that is to say as long as they were speaking the truth. No matter what you say, that statement is true to the person saying it. If they don't like math then they don't like it. There's not much to else say. You would not argue with that person and say that the point that they do not like math is their opinion on themselves. In that moment, it is true that the person does not like math. However, like opinions, these statements can change. A few years later, the same person may say that that they love math. Then both statements would be true because it all is in the moment. In the moment which that person claims that they hate/love math, it is entirely true and it is entirely what they believe. It is the same with seeing in perspective. The perspective that they see is true for them. You would not tell someone that they did not actually see something. People would not ever see the same thing but that does not mean that there is no truth in what they see.
People value sight and hearing as a way to get to the truth. Even if to you what someone says is an opinion or what they see is a perspective, to them it is a part of truth. It is the same as if you were to say to me that you saw a duck by the pond. I would not tell you that what you saw was just perspective. You saw what you saw. I guess my point would be that people have personal truths, a fact is also an opinion and visa versa.
