The spoiler doesnt give away any major secrets driveshaft, just what we will learn more about, so it wont ruin too much, if anything, for you if you check it

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\"We\'re not alone on this Island and we all KNOW IT\" - John Locke

Locke: Why do you find it so hard to believe?
Jack: Why do you find it so easy?
Locke: It\'s never been easy.