What Does Classification Have to Do with Knowledge?

Humans categorize things naturally as a way of memorization and a way of learning. These categories allow us to make sense of the things around us, and allow us to add new items to our schemas through our previous experiences. We, as humans, start by cramming new things into categories, and eventually start cramming categories onto new things. Categorization is everywhere in our lives, we find it in the form of classes, peoples, hobbies, schools, colors, shapes, textures, everything word we use to describe anything has a category associated with it that we created in our own minds, generating our own schemas.
My cousin had a child about a year ago whom I met for the first time last christmas, while he was just learning how to talk. Upon meeting the child (Chasen) I noticed something very interesting. It first happened when we were outside on a porch, he pointed to the sun and said "sun!" I was impressed that he was, at such a young age, able to point and identify things in the way that he did. However, later, as it was getting dark, we went inside, I turned on the light and he immediately points at it, looks at me and says, proudly: "sun!" Chasen had developed a category he referred to as "sun" meaning bright yellow circle above. Unconsciously, Chasen was developing categories constantly as new words were learned. With limited vocabulary, children tend to fit more things into smaller categories that those more experienced with language and the world around us would think ridiculous, such as calling a ceiling light a sun. This suggests that we enter this world with no categories, or rather, one single category containing everything we experience. As time goes on, however, and we learn and experience more things, creating more categories and shrinking our original category of "unknown." An example of this phenomenon is when I taught little Chasen the word "light." The introduction of this new word applied to what had previously been in his schema of "sun" shrunk his "sun" schema and added a new schema of what a "light" is.
Classification happens whether we want it to or not. Without classification, we cannot possibly hope to understand or remember anything about our world. The process of learning itself is categorization. If you see a chair, you know it is a chair. Chairs normally have four legs, though they can have more or less, they have a spot to sit (or else it could be a table), and normally have a back rest (or else it could be a stool). Just upon seeing a single chair, you developed a category for them, and this is the same with everything else you see. It is simply impossible to look at something without categorization, as any single word used to describe that thing automatically puts it into a category, whether that category is "chair" or "sun" or "blue thing." Classification is necessary, it gives us the ability to learn and understand, while also allowing us to communicate through common concepts.