Essay about 'Knowledge' Although some people may prefer to know just enough about different academic topics and consider this a better option for their professional development, I strongly believe that fully dominating a subject in any area of expertise can turn you into a go-to professional. It can also help the world to become a better place. These two reasons will be explained in the following essay. First of all, it is commonly said that “knowledge is power”, thus, every professional should aim to focus on understanding and dominating a specific technology or method if he wants to be recognize by other peers. This respect transforms, sooner rather than later, into new opportunities of promotions or a new job offer that can help us achieve a better social status. That is why there are so many Universities offering tons of Ph.D. and MSc programs for students and professionals that want to specialize in a specific branch of science. My personal experience is a compelling example of this. When I started my Master’s degree two years ago at the Federal University of Rio de Janeiro, I wanted to become an expert in seismic inversion, specifically in a new technology called “Full Waveform Inversion”. This technology has been very popular among the geophysical community in the last decade and is one of the main tools used by oil companies in seismic processing. Since there is almost no one in Brazil that knows how to work with this high-resolution inversion technique, I thought that delving deeper into the understanding of such a method and demonstrating that I am qualified to work with it, will make my profile attractive for future employers. Consequently, as soon as I ended my Master program, I was hired by one of the top geophysical companies in Brazil, thanks to my previous experience with full waveform inversion. This example shows how understanding a very specific topic can help us succeed in our professional life. In addition, knowing a lot about a specific topic is important since it can lead to more discoveries and new applications of science to solve a hard problem. As my Ph.D. advisor says, “hard problems do not have easy answers”. Indeed, if we only study the basics of any subject, we will not be able to come up with creative and innovative ideas that can be a great contribution to humankind problems. Moreover, if everybody takes the easy way and learn only the main concepts, there will never be enough knowledge to make our society progress. That is why some of the great