INITIAL DESCRIPTION

The series was originally described as follows:

The survivors of Oceanic Flight 815 were 1,000 miles off course when they crashed on a lush, mysterious island. Each person possesses a shocking secret, but they've got nothing on the island itself, which harbors a monstrous security system, a series of underground bunkers and a group of violent survivalists hidden in the shadows.

And the Pilot episode was described as follows:

The 48 survivors scavenge what they can from the wreckage of their plane; the survivors' pasts threaten their ability to survive as a group; a transceiver is discovered in the wreckage and hopes for rescue soar.

Today, we have only a handful of plane survivors left (Jack, Sawyer, Kate, Hurley, Claire). It is not the survivors pasts that threaten their ability to survive as a group, it is the island present. Any hope for "rescue" has been lost a long time ago. Even when six made it back to the main land, they decided to return with no plan on how to be rescued again.

Maybe the "shocking" secret of the island will be revealed before the End. Maybe not.

We may have to live with the prospect that the initial mysteries will never be answered by TPTB.
What is the mysterious security system? What were the underground bunkers? Who were the survivalists hiding in the shadows?

The years of speculative research into areas of science and fiction may have been for naught. Gone will be the explanations involving wormholes, event horizons, Egyptian religion, concepts of the after life, space portals into time, time machines, black magic, quantum physics, twin planets, parallel universes, inter-dimensional beings, nanotechnology, mind control, spirits hidden in plain sight.