I'm not saying anything that everyone else isn't saying, but let me just say it again:
So last night we learned that they OFFICIALLY GAVE UP. I was really excited to find out how time travel and weird magnetic shit and everything else was going to have some kind of cool explanation - my bet was on something quantum physics-related - and we get a magic fucking cave. FUCK YOU VERY MUCH. I could have come up with that. MY FUCKING DOG COULD HAVE COME UP WITH THAT, AND HE THINKS THE VACUUM CLEANER IS A SENTIENT EVIL BEING.
I mean, Carlton Cuse and Damon Lindelof or WHATEVER YOUR NAMES ARE, you could have sat down with a couple of physicists and FUCKING STEPHEN KING FOR ALL I CARE and said, a little sheepishly, "Look, we fucked up and put all these balls in the air and now we don't know how to get them down. You guys know about science and about plotting, so could you figure out a NONMAGICAL way to get them down that is SOMEHWAT PLAUSIBLE?"
But no. They punted and we got a magic cave. FUCK RIGHT FUCKING OFF.