Interesting how Walt appeared to Shannon several times. He even tried to warn her by motioning for her to be quiet so she wouldn't get shot. Now here we have Walt in another helpful role. However, this time he succeeds in the saving. Is it really Walt or a projection of Walt? I'm not so sure. But we do know that he is "special" and maybe connected to Jakob. Or perhaps Jakob just appeared to him in the form of Walt in order to inspire him, you never know.

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Because all we really need to survive is one person who truly loves us. And you have her.