The End of Time
As our journey through time and space and other universes comes to a close let us reflect on what we have discovered. We asked what was the nature of time and whether or not it actually existed. Through logical argument we came to a conclusion that time was only something measured in the mind of us humans. But we also saw that time can be viewed as a physical dimension belonging to a spacetime continuum. Its reality seems quite firm in that sense. Experiment verifies the theories of relativity showing that time is not a universal constant but is relative to an observer. From logic we deduced that the past and future do not exist. But we discovered that it might be possible to travel in time. If we can visit the past or the future they must exist. Also if time travel is possible then it is likely that there are an infinite amount of universes that we can travel to preventing us from creating paradoxes. We also saw that there are closed solutions to paradoxes that require that the past and the future mutually coexist and cause one another. It is a dizzying array of possibilities to assimilate. Perhaps there really is no time and the dimension we call time is some parameter that depends upon our perceptions of it. Or perhaps time exists, but in a multidimensional continuum that our finite minds experience one event at a time. It's really a question of metaphysics, but cosmology was once a metaphysical study. As more knowledge was gained it became the science it is today, seeking to understand how the universe began and how it will end. Current evidence suggests that the universe began with a bang, but its fate remains unknown. Will time have an end? Maybe we should travel to the future and find out, that is if you are up for the trip. Let's meet...yesterday!