Pointless to keep alive but impossible to kill, the "Jurassic" franchise returns for another loud nap of a new installment.

After several installments focused on silly human stories, the latest gives due respect to the creatures that made the whole franchise possible.

And yet box office is a problem the Jurassic movies have never had, whether the initial Parks or later Worlds. After Spielberg’s original, the follow-ups have often been aggressively dull, while still drawing huge crowds.