During Season 2, Walt became such an important part, getting him and then later, his speical nature. The stuff the Others said about him and something like "tested unprecendeted" or something like that. Have to wonder what they were doing, and why he is special. They have just left thats since Walt went home.

Maybe Walt will play a big role in the upcomming episode, with time travel, or psyhic or something. But idk.

I do want to know more about Walt's specialness. And why he's just fallen out of the show, he's gonna look weird now that he's older too.