My wife and I are going through all the previous seasons pretty quickly (re-watching for me, first time for her) at the same time we're watching the final one.
One of the things we're struck by is how *uninquisitive* the characters seem to be, at least when it's convenient for the plot. Has anyone else noticed that?
When they first crash on the island, no one thinks to send some people on a circuit of the island, just following the shoreline as far as they can. Sure, it's a big island, but there could have been a Sandals Resort around the other side, for all they knew!
When they find Desmond in the hatch and he runs away, no one thinks to follow him, particularly the people that might be good at tracking (Locke, Kate, Sayid). So, they have finally come upon someone who has been on the island for a long time and he runs away - but no one thinks that maybe he knows where to run to, and maybe they should follow? No one wonders, "Gosh, I wonder where he's going when he runs away from us?"
When Kate, etc find the second hatch, where Claire had been held captive, and they finally mention it to others, no one wants to go back and investigate this hatch more? Jack, who is a doctor, doesn't find the need to go examine what was a hatch with, apparently, a *medical* area?
In the first couple of seasons, two people, at two different times (Sayid, Hurley) come across the cable running from the forest, down the beach, and into the water, that eventually leads to Rousseau's area when they follow it into the woods. But no one, at least up to that point, ever goes back and wonders what that cable connects to at the *other* end, where it goes into the water? (If I remember right, that might be how they eventually find the "Looking Glass", but it sure took a long time to revisit it. With all these people idle on the beach, maybe someone could have been asked to check it out.)
Sheesh
Ken