Board Thread:General Discussion/@comment-4621306-20160220233942/@comment-4621306-20161023092311

Teleworm99 wrote: I was disappointed that they never explained what the "force" was the kept Bill from escaping Gravity Falls during Weirdmageddon. Or maybe it's already explained in the journal, I don't know. Other than that, loved the finale, and loved the fact that they didn't use the cliche "prophecy" as a lazy way to kill Bill without any thought to it. I can't beleive I never noticed that. They completely glossed over it.

Maybe whatever concentrates the weird there also prevented the Weirdmageddon from spreading.