The FuselageThe producers say there is no "unifying theory" that would connect all the dots on the show.
I'll venture one guess, though.
The "Others" commune, just one of the many DI experiments that were being run in the 80's before the "incident".
The Others themselves?
A)Test subjects for the commune
B)Children of scientists
C)Relief workers for hatch personell.
D)All of the above.
It could be that, with any or all scenerios, the people at the commune served the dual purpose of being commune test subjects and hatch relief, explaining why supply drops are still being made, and that at some point after the "incident", they decided as a group to desist from any more scientific manipulation (no more button pushing or receiving notebooks from Pearl). Tehy might have even killed off the original scientists or improsoned them (the other workers with Sawyer and Kate). Maybe they conspired with some scientists to discontinue the work, explaining the age of some othe Others. I believe Ben was born and raised on the island, possibly DeGroots child or even Hanso's.
There is indication of another fallout (Alex and Karl) that leads me along this path.
And it just now occurred to me that Jack is IN an aquarium where dolphins and sharks were once kept, then freed after the "incident", just as the bears and horse were.