Cablerunner - I'm sorry that you can no longer remember any informtion from your heady days in astrophysics. I did some looking around and couldn't find your third essence, but I did find this from Mr. Hawking:Professor Stephen Hawking

Since we all saw the fellow reading Hawking while guarding Carl, and I think Ben Linus had Hawking's book in his house, too, I thought this was an insightful and intriguing look at what could be going on here with Desmond, Naomi, and all our little island losties.

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