Have you ever wondered why you can't see your nose when you aren't paying attention to it? When you read this article, participate in a game, or watch a movie, does your nose distract you by coming into the field of view? Before knowing the answer to these questions, imagine entering your favorite Italian restaurant. When you first enter the room, the aroma of tomatoes and garlic is almost overpowering. When you settle down, you only get the aroma of the food that's being cooked and not the scent of your perfume. This process is referred to as "unconscious selective attention”. We are kept alive and sane by our brain's propensity to ignore things that it considers "useless".⁠ ⁠ The brain, the "criminal master”, is the organ behind all of these problems. The brain is also the most complex organ in the body that regulates every bodily function. It is responsible for thought processes, memory recollection, feelings of hunger, emotions, and motor sensations like vision, auditory, olfactory...