Earlier quoted context omitted.
I don't understand why people have problem with simply stating that it is emergent phenomenon and that's it. Similarly to how computer is computer and half sized computer is half of its bigger friend – you can keep halving it until there is no "computer" left in it. Or pencil – you have pencil that you call pencil; what about pencil half size of it? and so on until you hit single atom. You had pencil, now you don't,…
Pencil is just an idea, minds objectively have qualia (measured internally). Edit: you can’t measure “pencilness,” but you can’t help but know whether or not you’re in pain.
These are all proxy measures, but all of science is done by proxy.