“What is accepted as knowledge today is sometimes rejected tomorrow. » Knowledge itself can be compared to a small child who is about to begin a long journey of learning. Why this comparison? Because, as the child grows and goes through all the school years, over time he will learn more and more than before. The same situation can apply to knowledge itself. The quest for knowledge has brought humanity to the point of development where we find ourselves in the 21st century. Over time, new ideas and methodologies, as well as key technological developments, have led not to abandoning knowledge, but to modifying our previous knowledge. The word "rejected" can be used to represent two different ideas: either rejected as completely eliminating previous knowledge, or rejected as a modified idea, such that the previous one can be considered to have been rejected and replaced, although it is always present in the bases. of this new idea. However, how can we be sure that all knowledge is completely discarded and not changed by new discoveries? We used to think that, for example, genetic manipulation was reserved for science fiction, like Aldous Huxley's Brave New World or the movie Gattaca. However, it is now a reality that we face and seek even more. On the other hand, we can say that in history our knowledge is affected by sensory perception, language and will always be biased, since “history is written by the winners”. This idea leads to the fact that alongside technological developments, natural sciences have not rejected or replaced knowledge, but have modified the one we had with new discoveries. Additionally, the scientific method itself mentions repetition as one of its 5 steps. In the middle of the article......stated previously, the definition of what is rejected is not entirely accurate, since knowledge is never completely rejected, but rather modified. Technological advances, theories, ideas and methodologies all rely on something. That something is defined as the basic knowledge needed to get started, and over time it has never been abandoned, but rather reshaped into what it is today, making what we once believed n being a science fiction part of our reality and our daily life. lives.Works CitedDeVito, D., Shamberg, M., Sher, S. and Lyon, G. (producers) and Niccol, A. (director). (1997). Gattaca. [Motion picture]. UNITED STATES. Columbia Pictures. Dombrowski, E., Rotenberg, L. and Bick, M. (2007). IB Diploma Program – Theory of Knowledge Companion. Oxford, New York: Oxford University PressHuxley, A. (1932). Brave New World. United Kingdom: Chatto and Windus.