First episode impressions: ‘Fringe’ Season 4 (TV review)

Most shows are naturally constrained by their narrative — sort of like a choose-your-own-adventure book where every choice is locked in once it happens. But at the staff meetings for “Fringe” (8 p.m. Central Fridays on Fox), I imagine that if a writer says “What if this were to happen?,” he never hears “Oh, that can’t happen”