Foreshadowing refers to a technique by which writers give advance hints about key plot points which will emerge later on within the story. Bradbury's "A Sound of Thunder" follows Eckels, a time traveller, as he goes back into the Cretaceous to hunt a dinosaur only to inadvertently rewrite human history.
This short story begins in the future society which the time travelers themselves come from (and which will later be recreated as a result of Eckels's actions in the distant past). At this point in the story, Bradbury provides several details that will become important later on. Even the story's first paragraph does much to set up the transformations to come. The story begins with Eckels staring at a sign. It reads:
TIME SAFARI, INC.
SAFARIS TO ANY YEAR IN THE PAST.
YOU NAME THE ANIMAL.
WE TAKE YOU THERE.
YOU SHOOT IT.
Later, we learn about recent election results and how one candidate, Keith, defeated his opponent, Deutscher. Eckels is a supporter of Keith's, and a Time Safari Employee...
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