To "know" something you must have a full understanding of what you claim to know. You have to be able to comprehend the details, facts, and surroundings of what you understand. There are levels of knowing, these are created by your level of understanding. One of the ways to get an understanding of something is by your own perception. The way that you perceive something and the opinions that form become part of your initial understanding. This has become the first step of knowing. Perceiving something doesn't always mean that you have a clear understanding of what something is. How you perceive something is usually based on your opinion. Within some cases what you perceive is based on factual information, but this may not always be true. In other cases what you knowledge dictates your opinion. Sometimes the information isn't true and the inaccuracy of the information effects your opinions to have negative connotations. Regardless of if your prior knowledge is true your perception of something will effect what and the way you know about something.
Both knowing and perceiving are factors that correspond with each other in your understanding of something. You need one to be able to do the other. It is true that when you know something, you must also perceive it. To know something you have to have had a perception of it in the first place. Before you learn about something to the fullest extent you form a perception of it. You normally do this by taking prior knowledge that you know about this and/or from knowledge you know from a relating topic. The way you perceive something automatically comes when you begin to learn and know something. Once you have this perception developed, you are able to learn about the subject. This may back up you opinions or in some cases completely discredit them, which is a way that you progressed and have actually have learned.
This is also true that when you perceive something, you must know it. At least to some degree. When you perceive something you must have to have prior knowledge that you have formed this opinion on. This may not be always correct information, but it is what you knew about the subject or relating subjects that you formed your opinion on. This knowledge may have come from life experiences, texts, or any other form of learning.
When you know something you usually know the basic information about that topic and feel satisfied with know this. When you are capable of understanding the entire subject you have become somewhat "superior" with this knowledge. This is difficult to do, it doesn't just involve knowing the factual details of the situation or subject, but it also includes knowing all the sides of the topic at hand. This would include the "Pros" and "Cons" and every sides opinion. When you are able to learn all of this and fully understand all the information of the situation you have a superior level of knowing.
