Thinking out loud here…
So far, 3 of our 6 numbers would seem to have direct significance: the flight number (815, or 8 15), and the number of years since CFL and team were shipwrecked (16).
Start at a point equidistant between 15 and 16 (on a number line) and work in either direction. It’s 8 steps (with each whole number being 1 step) in either direction to arrive at 8 and 23. Probably just a number coincidence, since the ‘matching’ breaks down right after that.
23? Will that be revealed as Claire’s age when she gives birth? They did mention her birthday.
4? The number of folks who can fit on Michael’s raft. Alternately, this could turn out to be Locke and his most devoted followers. (On preview, I remembered: it was 4 years ago that Toomey died…)
42? The number of Lostaways left, excluding Locke’s group, with said split gradually becoming more apparent by season’s end.
42 + 4 = 46. I think we have more survivors than that currently, so perhaps a few real deaths may occur?
Another 4: CFL, Ethan, and the two bodies originally found in the caves. CFL’s team?
Ah, one could attach any meaning to the numbers at this point. I do think that the other numbers will likely gain some significance in the future.
I really enjoyed this episode, and place it solidly in the top 5 thus far, maybe even the top 3. I know we all waited impatiently for Hurley’s flashback, and some of you may have felt it was a letdown, but I felt it painted more of the picture, as cryptic as it seemed.