[jodrellblank]

> "the opposite ... thus, there is no need to appeal to an intelligent designer of the universe"

I'm not saying it's an argument for God, I'm saying more that it's as logically poor and useless as 'God' as an answer to the question. "Why are my parents white?" "if they weren't, you wouldn't be asking why they are white". "Why am I typing with my fingers?" "if you typed with your toes you wouldn't be asking why you type with your fingers". It's not an answer, it's a wordplay loopback which takes up the place of an answer and blocks anything else from going there.

> "Well, it explains why the universe is fine-tuned, if you buy the argument."

No, it observes that the universe is fine tuned but doesn't explain anything. How the parameters could possibly vary (how could the 'charge on an electron' concievably be tuned across the entire Universe, by any means, where is the tuning knob?), how the tuning actually happened - what process, where the multiverse universes could physically or temporally be, how they could arise, why they arise with different parameters, nothing. Worse, it suggests knowledge that the parameters can and do vary, knowledge of a multiverse or a tuning process applying to one universe, when that knowledge doesn't exist. It reassures the existence of a larger more powerful unknowable thing behind the scenes which makes this universe perfect for humans (cough Godlike cough).

> "Yep, just like any other answer to the question, since it's a metaphysical question rather than a scientific one."

"We don't know" predicts nothing, but doesn't pretend to be an answer, doesn't pretend to be more than it is.

> "It offers an explanation."

It placates (or frustrates) with a non-explanation. It's feel-good sugar when you wanted nutrition.

> "closes the book on any further questions / No more than any other answer does."

More than "We don't know" does.

[knightoffaith]

Well, there is a sense in which it is a good answer to "Why are my parents white?" if the question means "Why did I just so happen to be born to white parents as opposed to non-white parents?" and not "What scientifically caused my parents to be white?". The question about constants is more like the former than the latter since it's a question not about what scientifically caused the constants to be a certain way (we already know that it's not some physical phenomena that caused the constants to be this way - the constants are not a physical event to be explained physically).

Pivoting to the fine-tuning argument (not the anthropic principle):

The argument doesn't purport to answer precisely the questions you ask here, but it's still an explanation. To use the card example I used elsewhere, if I kept pulling the ace of spades out of a deck of cards and showing it to you, the answer to the question of why I'm always pulling the ace of spades that I've arranged these events intentionally still leaves the door open for other questions. How do I know where the ace of spades is? Is this a standard card deck, or are there multiple aces of spades in my set of cards? The answer that I'm arranging the events intentionally explains why an otherwise low-probability event is occurring, but it doesn't answer these questions - but that's ok, an explanation doesn't have to answer all questions.

[jodrellblank]

> "The answer that I'm arranging the events intentionally explains why an otherwise low-probability event is occurring"

Okay, I'll grant you that if someone only believes in a God creating conditions for life then the Anthropic principle sort of suggests a non-God possibility, along the lines that Evolution with natural selection presented a way for increasing complexity and intelligence to arise from random mutations without an intelligent designer.

Still, we humans exist in a visibly large and competitive 'dog eat dog' ecosystem, so observing that the ecosystem affects the life within it is a certain kind of idea which fits in with a lot of other observations. Your comment line which I quoted above assumes a low-probability event based on no other observations, when there's no reason to assume that, no sign of an 'evolution of Universes competing in a wider ecosystem of Universes'; you've declared this universe to be 'low probability' based on nothing and then seek to explain something about how we find ourselves in a low-probability universe. For all we know, this could be the only possible Universe configuration, the only solution to some Universe-equation, or an overwhelmingly likely one if all possible Universes are capable of supporting life [and the ideas of Universes which couldn't support life are, in some way, not possible].

[knightoffaith]

Indeed, it doesn't seem to me that we have a good reason to believe that universal constants could have been otherwise, or even if they could have been otherwise, that the probability that they lie in the Goldilocks range is low, so I don't really buy the fine-tuning argument. Nonetheless, I think we should give credit where credit is due - it's still an explanation.