Originally Posted by willow

1. French chicks son (probably) as mentioned above.
2. It's underground and underwater, and it's capable of shielding the island from Jack. They need this, and have him separate, because Jack is capable of mental manipulation with the island's power.
3. The island is capable of manifesting your thoughts. Hurley's numbers, Jack's dead dad, Walt's polar bear, Kate's horse. Mr. Eko figured it out when he looked into the smoke and saw his own fears. So did Locke. Doesn't work with everyone, but it helps if you're young and impressionable, hence the Others covet children. This is also why the Others choose to stay, and why they're obviously connected via high up with a powerful corp. or govt. agency. As the Others said last season, they bit off more than they could chew with Walt, the kid was probably too powerful for them to control.

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