All the scenes by the koi pond were originally intended to be in other locations. Originally, Charlie and Larry were in an observatory. Later, they were on a rooftop. The producers were looking for locations that captured the idea of observing things from above. However, the producers couldn't get those locations to fit into the shooting schedule. Due to the big action and number of other locations, they couldn't even do any college locations. So they had to make nearly all of those scenes happen at the Eppes house. It was the director, Davis Guggenheim, who thought of having Charlie and Larry watch the fish.