When did Jacob become so stoic?

We say him beat and(possibly baptize Richard) and also beat his brother twice, and have general emotion and curiosity about things. Or is it that only a flawed person can "protect" the island? Maybe mother originally thought that MIB was the flawed one, and that she would choose him, but after realizing that Jacob was some what alone and without want he was the one? but any way he seems in the OT from whenever he started visiting 815r's that he was stoic, almost omnipotent, is this a transformation that we are probably going to have to conclude ourselves; probably, but any thoughts?

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