fore it was proven that the earth was round, it was a well-known"fact"that it was flat. This"fact"was so widely accepted that no one dared test it, because they thought if they did sail out beyond the horizon they would fall off the edge. In other words, because they believed it couldn't be done, it wasn't done.That is, until Columbus questioned common knowledge and asked"what if?"This question literally expanded the boundaries2)of his country, changed history, and permanently altered accepted reality forever.In spite of our tendency3)to think of reality as the non-negotiable4)basis of our experience, the definition5)of reality changes every time someone pushes the boundary conditions of conventional6)wisdom. When our perception7)of reality changes, our behavior changes accordingly, based on what is newly considered possible. When Columbus returned from the New World, a revised world map was drawn up and this began a new era of exploration and adventure.Examples of the impossible being made possible can be found throughout history. When Chuck Yeager flew the X-1, he shattered8)the myth that there was such a thing as a sound barrier9). His training and instincts10), combined with the new technology of the day, not only enabled him to go beyond the speed of sound, but reinforced11)the fact that even alleged12)technological barriers can be overcome as well.