Biggest mystery is how the Others got all those weapons and how they got their military training.

Juliet, for example, did not seem able to throw a punch when she got onto the island and yet 3 years later was as proficent as a Navy SEAL.

And who are the original Others (the guy from Suddenly Susan et al.) and why were they on the island in the first place. They all speak US-accented English. Are they Americans?

And there’s clearly some faction of Dharma still active. Someone’s continued the supply drops, and unless Kelvin was an Other all along, they kept the Swan station running. Though depending on when the purge happened, it’s likely the Swan was just isolated enough that the Others didn’t worry about them, and Dharma couldn’t contact them.

My take on the “sick of lying” line, and Jack being a hero twice, was that the world knew the basics—they survived the crash, he led them in both staying alive and finding a way to contact rescue—but there were significant details that they had agreed not to tell anyone. The nature of the island, or the conflict with the Others, perhaps.

This could be a pseudonym, but since I’d prefer for both Sawyer and Locke to survive the entirety of the show, I’m hoping it refers to someone we haven’t met yet.

For all we know, they’ll be spending plenty more time on the island before the events of the flash forward… plenty of time to introduce J. -antham…

More unanswered questions:

-Surely the dharma initiative had contacts (at the very least within the Hanso foundation) off the island. What have they been up to since the purge?
-Does Naomi’s group have any relation to that?
-Jack mentioned to Kate that he’s “sick of lying.” Is this related to the apparent lie about everyone aboard 815 having died? He’s still using his own name to pick up prescription drugs, so he’s not keeping his survival secret, and the new doctor at his hospital said he was a hero “twice.” Was that a reference to the number of people he pulled from the car, or to his leadership on the island?