To begin with, it is necessary to define the word knowledge. Knowledge it is a justified true belief. An idea, prove to be true by an explanation or evidence. Most of the times knowledge is created due to curiosity, doubt and investigation that men does, and it depends manly of our senses, interpretation and experiences. Knowledge, can be divided in different kinds. An empirical knowledge, is the knowledge belief true, based on an experience or perception . This can also be define by acquirantance, where you know through your own experience and senses. Knowledge by description is another kind, based on a person's experience, the credibility of this will depend on the authority of the reporter. There is also an analytical knowledge, as math, which is based on reasoning. Another type of knowledge can be also, value judgment, where you belief something is true basing yourself on moral, ethic and aesthetic values. The last kind of knowledge that we would like to mention, is metaphysical knowledge, as religion, based on emotions and reasoning. Knowledge is a very complex issue, many times it is believed that it creates even more doubts and that we can't separate appearance of reality. "All, knowledge is uncertain, inexact and partial", is a very strong phrase, which we will try to analyze through this essay. We don't expect to get to a concrete conclusion, or to clear all our doubts, yet we hope to analyze this theme and to understand and know more about it.
Knowledge is uncertain, when it can change. For instance if we look to our past, we will see that knowledge was uncertain, because it has change and evolve. This evolution of knowledge will, always exist because investigation and doubts grow with knowledge, and together with this knew answers appear. For example, in science, at Colon's times it was believed that the earth laid on top of a turtle, and that this floated on a big ocean of milk, but this knowledge has evolve and nowadays it is seen as ridiculous explanation.