I recall that, Ashgan - my question, though, is more about about ... how that determining happens? What breaks when the soul is no longer there?

[Yeah, I am trying to make fantasy make sense in terms of reality, once more. Or, well, get an explanation to why would things not work as they do in reality in the said fantasy-world. Cue biochemistry, physics and ideology discussion as the real world is brought to focus as an object of comparison.]