I'm just saying that they built Walt up to be an 'anything goes' kinda guy. I definitely didn't expect Walt to poison Brock, and when I realized that he did, I didn't really believe it, because it seemed out of character, so I see where you're coming from. But looking back, it seems like a "natural" progression.
Like at this point, he would probably kill his family to "win" even more, even though they were the original reason for everything.
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_foolmo_
'but that statement is something only an Aspergers patient would say' - UltimaterializerX