Time Travel Argumentative Analysis

For a long time, people have conversed over the existence of time travel. According to David Lewis, time travel is “the discrepancy between time and time” (Lewis 1976). When one time does not equal the other time then, in that case, time has been traveled. Some people believe that time travel is in fact possible, and others believe the idea is absurd and impossible. Those people believe that time travel is impossible present several objections to time travel. Some of these objections are the elapse problem, bilocation problem, and the grandfather paradox. The grandfather paradox is an important objection to consider because it has strong evidence to prove that time travel is impossible. David Lewis, however, believes the grandfather paradox is false. He believes that it can be proved wrong and that time travel is still possible. There is one problem with Lewis’s argument though that creates a big problem. The …show more content…
We know that by simple time logic, Kelly's grandfather should live on in the same timeline until his death in 1957. Couple that with the statement that Kelly is capable of killing her grandfather we find that there must be something that indeed prevents the grandfather's death. Luck is the factor that allows Grandfather to live in the scenario. Perhaps Kelly was distracted at the moment of firing or maybe she misses. It is a fact of life that we are not always successful in everything that we are capable of doing which helps explain how Kelly could kill Grandfather and yet have failed to do so. Had Lewis not found a way to go around the problem of how the Grandfather is "allowed" to live given the two seemingly conflicting premises, it would be a definite paradox. In conclusion, Lewis' theory incorporates the two statements as equally true and truly eliminates the paradox of time travelling to kill one's own