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					Originally Posted by SydneyK  Makes sense. I've read someone's theory that, because of how Des responds to electromagnetism, Island-Des traded places with alt-timeline-Des, and that's why (1) Island Des thought MIB/Not-Locke was John Locke (and not MIB), and (2) LA-Des knew to run over LA-Locke. Your idea that Des was getting revenge fits nicely with this theory. | 
	
 I like this theory.  However, Desmond would have traded places before being pushed down the well.