 CONT: When Sawyer is seated on the beach and Jack approaches him  about his headaches, Sawyer mentions that his uncle had a brain  tumor. The camera angle changes from Jacks perspective to Sawyers  perspective, back and forth, about 5 or 6 times. Jack has on a  leather backpack in some of these shots and sometimes has a sporty  grey backpack. You can see the difference in the width of the  shoulder straps!