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Daniel Faraday sees a young red-haired girl at the Dharma Initiative camp in 1974 whom he believes is Charlotte Staples Lewis. However, Ben, when reciting her biography ("Confirmed Dead") stated she was born July 2, 1979, approximately 5 years too late to be Charlotte if Ben's information from Michael was correct (a birthdate of 1969 would be closer if this girl is indeed a young Charlotte). It remains possible, however, that the girl was not Charlotte, and Daniel was mistaken due to his grief. It also remains possible that the island's ability to displace things in time while coming or going (eg. the helicopter, Dr. Ray's corpse) created a situation where Charlotte would be forced to lie about her DOB.
Source: Lostpedia
