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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.  That explains why Des was not afraid @ the well and why he willingly joined Sayid.