Why do we Exist? After living for sixteen years, I have come to realize how much I know about the world. That is to say, I know nothing about the world and how it works. However, I still know more about the functions of the world than some. After taking AP Physics, I have gained an insight into how much, not only I, but we know as a species. I was stunned to learn how little we know, and how much. I know how gravity works and how it is related to mass and distance; but I, nor anyone else, can tell you why it works, or what causes it. This pretty much sums up how I feel about life. I can tell you how we live, and how our bodies work, but I cannot tell you why. This is one the greatest mysteries of the universe. My personal theory on why life exists at all is far less complex than I had imagined it would be. Of course, as I stated earlier I know nothing, so my own opinion may be totally worthless. But since it seems that no one else knows why we exist, I may as well try to explain it. I began to come to my conclusion not long ago, whilst reading A Brief History of Time, by Steven Hawking. At the time, I was studying quantum mechanics (how the smallest things in the universe work, such as protons or neutrons) in physics. We had just had a lesson on the quantum tunneling effect. I won’t get into the specifics, but quantum tunneling works because matter has a wavelength, and because of this, it has the possibility to be anywhere in a certain area, but you won’t know where it is until you measure it. Because of this, and the motion of the particle, there are times where, say an electron (which doesn’t belong in the nucleus of an atom) can bypass the strong force (one of the four fundamental forces) and enter the nucleus. It was then when I realized that the entire universe is built on probability and possibility. Later in the course we studied entropy, and how everything is continuing to break down. In fact, a current prediction by many physicists is that the universe will break down until it cannot break down any more and all the matter in the universe will be spread out evenly. No stars, no planets, just matter and heat. It then came to my attention that we (human beings) and even our very planet are just places where the destruction of the universe has been put on hold. I think that this is a wonderful thing! Since the universe is based on possibility and the universe