Most sequels, prequels and remakes have some vague reason for justifying their existence. Not the Jurassic Park-Jurassic World franchise. They just keep on coming for no other purpose than to cash in on a proven formula marketed for undemanding audiences who just cant get enough of T-Rexes and flying pterodactyls, and are always willing to plunk down more hard-earned money to scream their way through another excess of what theyve already seen before.