Main Article Theories about
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  • 'A4' is a reference to RESEARCH LAB A-4, the facility Juliet accessed to steal the drug.
  • This is the same vaccine that was injected into Claire.
  • The A and E stand for Adam and Eve - Damon Lindelof and Carlton Cuse said that there is an anagram, which may shed light on the Adam & Eve mystery and the wider Lost mythology.[source needed]
    • Possibly a future Adam & Eve born in 4993, or something to do with the year 4993. Alive for 4993 years before dying...
  • According to Aaron Ze’ev Aescoly's book, Jewish Messianic Movements, a prophetic letter written to the Jews of Egypt declares that "And in the year 4993 [1233] the Messiah, son of David, will come... and kingship will return to the house of Jerusalem." Perhaps there is a Messiah coming. Further connections to the Judo-Christian Messiah can be made, as the women of The Island cannot bear children, just as a virgin cannot bear children. According to prophecy, the Messiah will be born of a virgin. If this vial A4993-E3 is to use to make barren women fertile, it possibly can allude to a miraculous and messianic birth.
  • 4993 is the year the human race will become extinct, ( unless any one of the numbers can be changed in the equation. This was one of the objectives of DHARMA, to use the Island's unique physical properties to determine a possible different outcome.

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