Simon has seen Lost now, so I can talk about my Jacob theory. I think that he was the Captain of the Black Rock, and that Richard Alpert was also on the ship. Their clothes seem to tie into a slaving-era ship. And could Ben even see Jacob? I’m not so sure, considering that the chair he was talking to was not the chair that we saw Jacob sitting in for that brief glimpse. And what about Rousseau? Do we believe that she was on a research vessel, or has she been hanging round for 100+ years as well?