Is the emergence weak or strong? If it's weak, then subjectivity can be reduced to neurons firing or whatever. What does that look like? If it's strong, then yo

Is the emergence weak or strong? If it's weak, then subjectivity can be reduced to neurons firing or whatever. What does that look like? If it's strong, then you spooky emergence, which means something entirely new — something not entailed by prior physics coming into existence. That would be non-reductive physicalism, but I'm not sure how it's different than property dualism that David Chalmers would endorse.