we have seen a) that jacob is blond and able to leave the island could he be aaron?? aaron born on the island but raised off the island giving him the ability to move on and off... b) mib is dark haired with blue eyes much like david... born off the island and thus not able, once trapped, to leave... also his craving to go "home" where he belongs makes me wonder..
could these facts imply that we 're up for an ending showing that this is a vicious cycle???
also i have a hunch that mib is the good guy and jacob the bad... what do you think???