When they spot the huge terrifying dinosaur, though, Eckels panics, inadvertently stepping off the path and crushing a single butterfly. That tiny difference is enough to unloose a chain of events so that by the time they get back to the future, it is irreparably changed.
When they spot the huge terrifying dinosaur, though, Eckels panics, inadvertently stepping off the path and crushing a single butterfly. That tiny difference is enough to unloose a chain of events so that by the time they get back to the future, it is irreparably changed.