I guess this part wouldn't make sense to me, since it would require Jacob to inhabit the body of Sayid, while the nemesis is only taking the form of Locke, but obviously not inhabiting his body as evidenced by the corpse on the beach. I would have a huge problem with that, but that's just me. But something else was strange with the airplane scenes. It wasn't as simple as "the plane was supposed to crash, but it didn't." Something else changed prior to that, since Hurley quipped "I'm the luckiest man alive!" which we all know wasn't the case after Hurley won the lottery. And how did the flight attendant wind up at the temple? What did she mean by the "first" plane? And who are these other "Others?" Will my headache ever go away from trying to keep all the timelines straight? She was kidnapped in the episode "The Other 48 Days" on her way back with the Tail Section people.