The whole story just has so many layers to try to explain, but it makes for an interesting read. Since Billy keeps randomly traveling to the Past, Future and Tralfamadore there just seems to be a lot going on and can get a little confusing. The book really highlights the effects of war on the survivors and what could be considered schizophrenia. 
 Full review on my blog; 
 http://literary-exploration.com/2009/...