So this is a total stab in the dark theory but I think the Foundation and the Others are part of some expierment to raise super children.
Take Jack, he was a young and gifted surgeon. Locke has a billizion and one expertise. Walt can make things appear. Danielle's daughter was kidnapped but never harmed. Them trying to take Claire's baby after the psychic warned her that is was very, very important that she raised the child.
I mean, we already know that Hanso corporation was up to all kinds of crazy things. And the Dharma Initative was the same. Maybe everyone ending up on the island was a plot so study them as subjects.

anyone?