We grow out of that phase pretty quickly, but Hollywood's made a lot of money gambling that audiences will fall for the same trick. For some reason, if it's not physically up there on the screen, we have a difficult time thinking rationally about it. It's why we didn't care that Jason Vorhees walked like a less athletic zombie whenever he was on screen during the first dozen Friday the 13th movies, but somehow became the Indian Shaman from Punch Out whenever we couldn't see him.
Of course now he can run, which somehow seems even more retarded.
Would you believe us if we told you the two most iconic scenes from one of the most successful films of all time make no sense being in the same movie together? Jurassic Park's two most memorable moments are probably 1) The T-Rex causing miniature earthquakes that make various puddles and glasses of water tremble 2) The same T-Rex sneaking up and saving our heroes from the raptors like he's Mr. Miyagi. We don't know the T-Rex is there until it's snapping raptors in half, and by then everything's way too awesome to wonder where all the goddamn earth quaking disappeared to.