I better binge this before Season 4 ends the run

Like all time travel efforts the characters fold back over themselves many times. The architecture of the universe we are watching becomes less and less sure and confusion reigns.

I hope to get back on decent footing enough to figure out what's what before season 4 starts.

Ultimately, I love the show, but am glad it is ending. Time travel shows are really doomed unless the scripts for them have a well defined beginning, middle and end. Here's hoping for a great ending in season 4.