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People’s Actions and Its Consequences in a Sound of Thunder

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“A Sound of Thunder” by Ray Bradbury tells a futuristic story, taken place where technology and society have advanced to not only the creation of time travel, but to use it for entertainment purposes. Humanity can “essentially” travel to any point in history and “essentially” return safely. However, A theme of cause and affect takes place throughout the story. Even the slightest change to the past can alter the course of the future. As dangerous as this is, for the sake of the plot, society uses time travel recklessly. The main character, Eckels, attends a company, “Time Safari Inc.”, which provides a guided prehistoric hunting trip. The company, as well as the government, seems to understand the dangers of altering the past, as seen by the precautions, rules, and warnings given to travelers. But Ray Bradbury expresses the increasingly powerful technology that human beings could not fully understand. There is a connection between the past, present, and future meaning that every action, no matter how small, has consequences.

The company offering the time travel experiences, Time Safari, Inc., at first seems to understand the dangers of altering the past, as is evidenced by the precautions and warnings given to potential travelers. The company emphasizes that it does not guarantee any particular outcome—not even its clients’ safe return. Before setting off, Eckels has to sign a release of all liability, which the company’s agent explains in terms of danger during the safari: “Those dinosaurs are hungry.” The company has also set up anti-gravity pathways to prevent safari goers from interacting with the world around them and pre-selected dinosaurs that would have naturally died within minutes of being shot by time-traveling hunters anyway.

Mr. Travis, Eckels’s guide, explains the theory behind the company’s many safety precautions to ensure minimal effects on the past from their safaris. At such a great distance into the past, he says, tiny shifts could snowball over time and have a huge impact on human civilization. Things that seem small to Mr. Eckels because they have little impact in an ordinary human lifetime, such as stepping on a mouse or a plant, could mean much more when the time scale of their consequences is millions of years.

Nonetheless, there are penalties in place for the possibility that someone might go off the path—suggesting that the company’s precautions are not as failsafe as they should be, given its alleged appreciation of the danger of altering the past. While the company can account for some causes that might lead to changes in the past, and therefore the present and future, it overestimates its ability to control events and overlooks the ever-present element of chance. For example, when the dinosaur frightens Eckels, he does not have the presence of mind to follow instructions and return to the time machine. Instead, he wanders off the path, and the safari guides do not notice until the damage is already done.

Bradbury seems to thus be presenting a sort of naïveté on the part of humankind; the company paradoxically articulates the immense danger of changing the past in any way, yet also foolishly believes in its own ability to safeguard against such changes. Mr. Travis admits, “Maybe Time can’t be changed by us […] We don’t know. We’re guessing.” The precautions taken by Time Safaris, Inc., then, are based on an incomplete understanding of what time travel technology can do. This element of uncertainty gives the scenario a hint of recklessness, as human beings are meddling with powers they do not fully understand.

Even the smallest slip-up proves enough to set a cascade of historical changes in motion. When Eckels wanders off the path, he does little more than trample a few plants and step on a butterfly. This tiny act of destruction, however, sets in motion a total political upheaval and even changes to the English language back in the year 2055. The first hint that Eckels sees is the sign in the Time Safaris, Inc. office, which now reads “TYME SEFARI INC.” He quickly discovers that the changes go much deeper than simple spelling, this time with an ironic twist. When Eckels first arrived in the office, he joked with the company’s agent about the possibility of wanting to escape the present if Deutscher rather than Keith had won the election. Upon returning, he finds that his trip to the past has caused Deutscher to win after all.

The plot of “A Sound of Thunder” hinges on the idea that the relation between cause and effect is far more complex than humans might like to think. Bradbury uses the conventions of science fiction to explore the consequences of using technology without fully understanding it. His story anticipates a future when humans will be able to meddle with history, and demonstrates how futile and and misguided such an effort would be. Bradbury urges readers to raise the question of whether some technological advances serve only to facilitate human hubris.

After accidentally crushing a butterfly underfoot 65 million years ago, Eckels returns to a present drastically different from the one he’d initially left behind. Small actions can have major repercussions, by emphasizing the drastic effects of something as seemingly mundane as crushing a butterfly eons in the past, the story suggests the intimate connection between the past, present, and future.

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People’s Actions And Its Consequences In A Sound Of Thunder. (2021, August 06). GradesFixer. Retrieved May 19, 2022, from
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People’s Actions And Its Consequences In A Sound Of Thunder. [online]. Available at: <> [Accessed 19 May 2022].
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