I think there was some type of gov. genetic testing done at the island that went bad. Explains the shark (with logo), polar bears. etc. That dude in the hatch said something about disease up above. That same dude met Charlie at the stadium. He said 2 things that stand out to me. #1 Remember to lift up
#2 See you in another life time
Then in the hatch Charlie recognized him and the dude did not recognize Charlie. So this leaves me to believe that the dude travelled back in time. So it explains why Charlie knows him in hatch but the dude doesn't know charlie. "REMEMBER TO LIFE UP" "SEE YOU IN ANOTHER LIFETIME"
Why would the show want you to know this? I am willing to bet Charlie has to lift up for something!
Another way the show might be going is like MATRIX! Everyone is hooked up to machine and things are playing itself out.
I love the show but I am tired of all the cliffhangers and I don't understand why they don't make it a 2 hour or 90min. show every night. HUGE $$$ with comercials. 60min. is not enough time for the all info they keep trying to spit out at you.