Steven Spielberg has many techniques that are known to be his. They are signature shots. One example of this is the reflective shot. This involves the character standing on one side of a window or pane of glass and being able to see what they see in the reflection. This is a smart shot because 2 shots would normally have to be taken to show each side. In theory, this shows 2 shots in 1 as both of the shots that would have to be taken are shown at once. This is shown in Jaws when he looks out the window to see a shark attack. An advantage to this shot is that you can see the persons reaction at the same time as seeing the event that is happening. The disadvantage is that it might not be easy to see as the event almost seems transparent meaning that the scene could not be showing its full potential.