In a sound of thunder, Travis's dialogue with the restaurant reveals how upset he is about equals. Having left the path, this is an example of.
This is an example of a turning point or a critical event in the story.
To answer your question, it seems that a detail or passage is missing from your explanation. However, from the given information, it is not clear what "equals" refers to in the context of Travis's dialogue.
Now, to determine the meaning of the phrase "having left the path" and its relevance to Travis's upset, it is necessary to refer to the source text. If you are referring to the short story "A Sound of Thunder" by Ray Bradbury, it describes a time travel adventure where a group of hunters visits the prehistoric past. They are required to stay on a designated path to avoid altering the future. Any deviation from the path can have significant consequences.
If Travis has left the path during this time travel expedition, it would be an example of what is known in literature as "the butterfly effect" or a "butterfly change," where even a small action in the past can have notable repercussions on the future. This can cause Travis to feel upset or concerned, anticipating disastrous consequences due to the potential alterations made by leaving the path.
It's also worth noting that without further context or information, it is difficult to provide a more detailed analysis or explanation. If you have more specific details or passages from the story, feel free to provide them so that I can offer a more accurate analysis.