Re: Fringe 5x11 - "The Boy Must Live" (Discussion, Spoilers)
About sacrificing Peter, basically if there are no Observers, Peter (and Walter) will not be saved. That's what I just realized.
There are an insane amount of plot holes, it's time travel.
"Did you (republicans) fall down,hit your head and think you woke up in the 1950s? Or the 1890s? Should we call for a doctor?" - Senator Elizabeth Warren.