Lame, but you have to give TPTB a break at this point.
After how they handled last night's episode, I am disinclined to do so.

Anyway, it's entirely possible that Smokey later shares the knowledge of installing the wheel with the next batch of folks to come, hoping to still use it in some way to get off the island, even if that only means using it to manipulate more people.
I'm wondering if we're going to get clarification on the statue and temple like we did the wells. Given that Jacob and MiB's people were Romans, I would've thought the statue and temple (and the game), appearing to be ancient Egyptian, would've already been there. 'Course, Egyptian lore didn't die with the rise of the Romans, so they could still show up later. If you go with the Atlantis theory, and put the island originally in the Med, both peoples could easily shipwreck on the island.