Board Thread:Spoilers!/@comment-1916997-20170217023403/@comment-25375217-20170303030027

Time travel shenanigans are different from time jumps. Future Henry would be the show skipping over twenty years. Time travel shenanigans would be the Season 3 finale all over again.

It's worth noting that, even with how far behind they've fallen, a twenty year time skip is the 2030s, which means they'd be making up future inventions or otherwise stretching our suspensions of disbelief.