In the very beginning of the movie just after the guy commits suicide on the ships mast. We see a view of the back of Terri Flores (Jennifer Lopez) sitting looking at her laptop computer. She is sitting with her left elbow resting on her left knee using only her right hand to tap the keys on the keyboard. Then it switches to a front view of her. Her left arm & hand is NOW laying on the desk in front of her and her right elbow is resting on the desk and she is still using her right hand alone to tap the keys on the keyboard. Then the view switches to a close up of what she is looking at on her computer screen and it Now shows BOTH of her hands "floating" over the keyboard as though she was using both hands to type with. Then it switches to a front view of her again and her arms & hand are back where they were before.(Her hands & arms truly do move quicker than the eye.)