When Booth and Brennan are getting ready to go to the water park, Brennan is folding a beach towel. In one distant shot, she is almost done folding it. When it changes to a closer shot, she has just started folding it again.
Aubrey looks at a picture of tire tracks from a satellite photo. He immediately says, "well, they're fresh." You wouldn't be able to tell if they were fresh without standing next to them and even then it would be difficult if it was a high traffic area which would degrade them constantly.