Time has flustered, annoyed, entertained, and confused humans since the creation of the earth. Humans get bored and wish to travel through time in order to skip the uninteresting facets of life. People desire to return to the past to fix mistakes, forewarn ancestors, and attempt to improve the present. Humans have become dissatisfied with three dimensional vacations; people must now travel through time and space. Trekking back to the signing of the Declaration of Independence should be much more enjoyable than visiting a museum. However, humans cannot begin to fathom the complexities of time. Science is not a united front; several different methods of time travel have been suggested, debated, and debunked. Each hypothetical method requires an extremely specific set of qualifications, most of which are random occurences in space. At this rate, time travel will not become more than a faction of science fiction for several more centuries, if ever. Indeed, the time travel conundrum faces similar divisions and disunity in popular culture. No genuine laws of time travel have been formulated even in literature and film. The three major speculated methods of time travel are each unacheivable in their own ways, and the entire process of time travel will remain at a halt until an understanding of vaugities in Einstein’s theories of relativity can be acheived.
Several major players have influenced the worlds—physical and fictional—of time travel. Saint Augustine was among the first to enter the scientific discussion around AD 400 (Kaku 217). Saint Augustine conjectured that time is not a real thing, since the past is lost forever, the future an unpredictable fronteir of darkness, and the present an ever-changing instant (Kaku 217). The timeline, in effect, does not exist, and Saint Augustine guessed that God, all-powerful, was able to overcome time (Kaku 217). Sir Isaac Newton, internationally and infamously remembered for his contributions to physics, especially changes in motion dependent on time (Pickover xvi). Newton created a world of absolute time (Thorne 63). Newton theorized that “both space and time were absolute. Space was a fixed, infinite, unmoving metric against which absolute motions could be measured” (Pickover xv). These laws unfortunately led to a halt in scientific discovery regarding time and travel through it until the early twentieth century (Thorne 63). On the other hand, the idea exploded in art across the globe (Kaku 218). Although the idea occasionally entered oral tradition throughout the centuries, the first time travel story was penned in 1733 by Samuel Madden (Kaku 217). The story is “about an angel from the year 1997 who journeys over 250 years into the past to give documents to a British ambassador that describe the world of the future” (Kaku 217). Everyone from famous authors, such as Charles Dickens (A CHRISTMAS CAROL) and Mark Twain (A CONNECTICUT YANKEE IN KING ARTHUR’S COURT), to lesser known authors developed the strange and unfathomable possibilities of time travel (Kaku 218). All these stories led up to the quintessential time travel masterpiece, H.G. Wells’s THE TIME MACHINE (Kaku 218). The novel beautifully describes in rich detail the war-torn apocalyptic world of the future as well as the process by which one may travel at ease between points in time (Kaku 218). Film as well used time travel as a plot device (Kaku 218). In SUPERMAN I, for example, Superman flies around the Earth faster than the speed of light in order to reverse time and bring Lois Lane back to life (Kaku 218). The examples are endless and will continue to amuse and confuse audiences for centuries.
Newton’s belief that all “will agree in the period of some planetary orbit or the duration of some politician’s speech, so long as … all use sufficiently accurate clicks to time the orbit or speech” would be destroyed by one Albert Einstein (Thorne 63). According to Newton, time was unalterable; according to Einstein, on the other hand, the definition of one second varied as one changes position (Kaku 218-219). In 1905, Einstein powerfully and controversially deduced that “There is no such thing as absolute space. There is no such thing as absolute time. Newton’s foundation for all of physics was flawed” (Thorne 72). Einstein is humorously remembered to have said, “Newton, forgive me” (Pickover xv). Einstein’s new Theory of Relativity had two parts (Thorne 72). First, the speed of light is constant, regardless of the direction and the motion of the observer (Thorne 72-73). Second, the laws of physics are required to define every state of motion equally (Thorne 73). Einstein theorized that “what I call space must be a mixture of your space and your time, and what you call space must be a mixture of my space and my time” (Thorne 73). For example, if two people have two distinctly different motions, they may observe the same event but have contrasting views of when exactly it happened (Pickover 10). The idea of multiple Nows, known as the relativity of simultaneity, is an important aspect of Einstein’s Theory (Pickover 11).
Einstein’s Theories greatly enhanced the world’s study of time travel. Following Einstein, it was deduced that time travel actually occurs when rockets leave the atmosphere at extremely high speeds (Kaku 219). Time in the rocket slows down, and those inside are farther into the future after spending less time (by Earth standards) getting there (Kaku 219). Although only extremely small amounts of time have been traveled, the amount of time would increase as one’s velocity approached the speed of light (Kaku 219). In order to travel backwards in time, one must reach the speed of light (Kaku 219). In the 1970s, Stephen Hawking deduced that many of Einstein’s most minute details are actually relevant to physics (Kaku 220-221). Hawking was tittilized by time travel (Kaku 221). He sought to know why there were no travellers from the future, if time travel existed (Kaku 221). In 1990, he set out to discover a law that would prove time travel impossible but shockingly found nothing (Kaku 221-222). Hawking’s acceptance of the possibility opened the door to new interest in the real scientific, rather than simply the fictional side. Kip Thorne explains:
Time travel was once solely the province of science fiction writers. Serious scientists avoided it like the plague - even when writing fiction under pseudonyms or reading it in privacy. How times have changed! One now finds scholarly analyses of time travel in serious scientific journals, written by eminent theoretical physicists… Why the change? Because we physicists have realized that the nature of time is too important an issue to be left solely in the hands of science fiction writers. (Kaku 222)
Indeed, the possibilities now seemed endless.
Scientific exploration exploded because Einstein’s theories were vague enough that many unique types of time machines could be theorized (Kaku 222). Three major types have emerged as the top