This is supposedly the most complex and complicated movie since Primer...and this being my fourth watch I must agree with that assessment. If you don't have a background in science-y things then you'll be like me, Googling and reading interviews with the director the moment it's over *lol*.
It's amazing. To me, it's perfect. (And it has XANDER!) We always discuss it for hours after watching it and this time was no exception. I don't want to say much and ruin it for anyone. If you enjoyed the original X-Files series then you will probably love this. (It's a 10/10 from me!)