The story tells from Elckel want back to the past, they killed the dinosaur, Elckel steping out of the path, they went back to future and find out the world has changed because of them. The peieces were lined up in the order of timeline. Readers can understand hows the event knowing straight through.

The decision to offer time travel to wealthy clients resulted in Eckels' journey back to the age of the dinosaurs.

The future changed due to Eckels stepping on a butterfly, which was something people often feel like as neglectable.

Because the timeline itself should not be messed with, the company made a lot of rules concerning the prevention of future alteration.

The men never saw T-Rexes before in their life, which was why they were so scared when an actualy T-Rex showed up, which also led to Eckels running off the path.

The conversation regarding the results of the presidential election, the man behind the desk warning Eckels that breaking the law would result in a hefty fine or government action when he returned, and Travis, the safari guide, continuously reminding the hunters to stay on the trail

Since Eckels breaks the rule of no stepping off the iron path, Eckels is made to dig out the bullets from the T-rex.