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- The black rocks as used by Bernard and as featured located over the island, will prove to be the part of the source of either the sickness or the healing. We will have to keep our eyes on those involved building the sign, to see if there are any "effects", it just seems like the black rocks have been introduced to us at a pivotal stage.
- The SOS sign is meant of course to say "S O S", but when passed over, the incomplete sign will actually look like a frowny face. Perhaps this will create some course of events if any new planes come by. New friends for the losties?
- The unfinished sign coincidentally creates the Button computer's >:I prompt. This may be an allusion to the graphic novel Watchmen. The way the shot tracks away from the sign is very similar to the way the "shot" tracks away from a smiley face on the surface of Mars in Watchmen #9.