By the Numbers By Sarah Stegall Copyright © 2010 by Sarah Stegall Fringe Thursdays on Fox at 9/8 E/C “6955 kHz” Written by Robert Chiapetta & Glen Whitman Directed by Joe Chappelle “Fine, if you end up breaking the universe, this time it’s on your head.” —Walter (to Peter) Aaand there we go, right off the rails. Over the past three years, Fringe has carefully built up a mythos and a premise rooted in plausibility. The science behind the alternate-universe theory, behind Cortexiphan, behind the “war of the worlds” between Walter and Walternate is out there, for sure. It’s fringe science at…