“THE KNOWLEDGE CYLCE” “What is accepted as knowledge today is sometimes rejected tomorrow. » Consider the knowledge issues raised by this statement in two areas of knowledge. For my particular work, knowledge is defined as the information we acquire and accept as true. A key word in this definition is "accept", because often what we believe to be true is not necessarily true and is only true for us as individuals because we have come to accept it . We also need to define reject, because in this particular analysis, reject means ignore, but not completely remove. This work will analyze how and why knowledge is capable of undertaking changes, while addressing the knowledge issues that these changes pose to what we believe. Additionally, methods in which knowledge presentations maintain credibility will also be evaluated. The questions presented will focus on two ways of knowing; the human sciences and the natural sciences. The first problem presented corresponds to natural sciences as a mode of knowledge. The scientific method is the most important method in natural science for drawing conclusions and relying on facts. The nature of the scientific method itself includes a revisionist stage, where the initial hypothesis is evaluated based on the observations found. The equivalent of a hypothesis could, and in most cases where data is examined, replace currently accepted knowledge. For example, initial knowledge would be the belief that the earth was flat. This knowledge would be the subject of controversy and ultimately revised...... middle of article ......its and sources. In conclusion, it is now evident that the word “sometimes” is an important part of the prescribed title, as it is essentially an assurance for the non-contemporary knowledge we hold. An example of such knowledge would be the year of American independence, something indisputable and concrete. Whatever details may be revised regarding this fact, the actual fact that American independence occurred is not something that lends itself to revision. Although revisionist methods can take us out of our comfort zone, it is usually only details that are changed, while the main concept usually remains unchanged. I myself am in favor of revision in all areas of knowledge, because I believe that change and the ability to accept change is a fundamental part of acquiring knowledge and, more importantly, of expanding the knowledge we already have..