Yeah, fine-tuning has never been a convincing argument for me. It makes the assumption that everything that exists was destined to become this way.
It like dropping a clump of sand on the ground and saying "what are the odds that every grain would land just this way"?
Indeed. I call it the "teleological fallacy".
There's this great analogy to illustrate the reasoning error...
2 random frogs are sitting by a random pond, where the frogs have been living for generations.
One says to the other: "look how perfect this pond is for us to live... surely a super-frog created it especially for us, so that we may live and thrive".
Off course, the pond isn't fine tuned for the frog. Instead, the frog is fine-tuned for the pond. And no "mind" was involved in that fine-tuning. Rather, it was the blind process of biological evolution.
Also, empty space in a vacuum isn't "something". It's actually is "nothing", but our mind has been trained to only recognized things. Just because you label space as a thing doesn't make it so.
This, I need to disagree with in this context.
In this context of "something from nothing", what is meant by "nothing" is "absolute nothingness".
The word "nothing" means very different things on different levels.
Consider "there is nothing in this box". By "nothing" here, one means the lack of objects that one would put in a box (books, dvd's, etc). But off course the box is full of stuff... there's plenty of molecules etc in there.
In the vacuum of space, "nothing" means that there are no molecules either. But this vacuum still ways something, it still has an energy signature. There's plenty of quantum stuff going on there. Space furthermore, IS something as well (as opposed to "absolute nothingness).
The problem I have with statements like "(absolutely) nothing can't produce something" is quite simply that none of us have ever observed a state of "absolute nothingness". I'm not even convinced that such a state is even possible at all. It's not clear to me at all that if we remove the universe and everything it contains from reality, that what we would end up with is "absolute nothingness".
So purely by that reasoning, I think I can dismiss the bare assertion that "absolute nothingness can't produce something". For the sole reason that we never witnessed this nothingness, don't even know if it's possible at all, don't know what properties it has or doesn't have, have no idea about what it can or cannot do, because we never studied this state.
I have no clue on how it could ever be studied or if it even makes sense to talk about its "properties"....
But I do know that it's not reasonable to simply accept this assertion and move on. I'll agree happily that it sounds likely that "absolute nothingness" can't produce something... but not for the life of me would I commit to such a statement.