Review of 'Slaughter House Five'& Time Travel

'Slaughter House Five' is realistic but nonrealistic story that deals with the theme about time travel.  With the contrast between Bill's and Tralfalmadore's idea, the book shows the revolutionary definition about time.  Usually, humanity has considered history as significant record and regarded past, present and future in three different categories.  Based on our viewpoints, time is the automatic flow that human should obey.  However, Tralfalmadore views past, present, future in whole one point and regards time as imperturbable principle of universe.  The famous quote "So it goes" is the author, Vonnegut's typical definition about time.  So, the usage of time travel in the story not only brings the curiosity to the reader but also makes the reader to consider time in whole different concept.  For me, time travel is possible but impossible idea for human to discover.  Human is created upon the principle of universe that if we disobey to follow it, we will lose history, present and future.  That's my concern regarding to the time concept in the book.