"We can't explain it therefore we can't create it" doesn't seem like a strong argument, emergent behavior and whatnot.

Hell, the fact we don't know what consciousness is means that some LLM systems (or trees! or planets!) might already have it, and we'd be none the wiser. Not that I believe this, but as these systems get larger and more sophisticated it's an increasingly concerning proposition that we have no way to validate either way.

IMO consciousness is just a human-centric ego concept, nothing to do with reality. It's just too much to consider the possibility that "the brain just take the decision." Most people just want the narrative of "I take the decision; the brain follows", which is just false.

We don't know why do many medicines work, and that doesn't stop us from using them to good results.