As an introduction to this long-overdue debate I could not sum up the position of the Teleological Argument vs. the Weak Anthropic Principle any better than this:
Kyle Kelly wrote:The teleological argument, or argument from design, is considered by many to be one of the strongest arguments for the existence of god(s). Many proponents of this argument point to the improbability of a universe existing with properties compatible with the existence of observers as evidence that the universe was designed. This fine-tuning argument argues that the probability of the universe existing with the features compatible with our existence is prohibitively low and therefore necessitate a divine designer.
In many other debates Harvey takes the Teleological Argument as evidence for God and
here he denounces the WAP calling it a "conceptual scheme for the denial of the evidence for God":
harvey1 wrote:This only demonstrates the tendencies of atheists to construct conceptual schemes to try and deny the evidence for God--not the actual doing away of the evidence. If anything, the arguments for a beginning have only increased since Hoyle uttered his comments.
QED wrote:By "conceptual schemes that deny the evidence of God" you're probably referring to the WAP. Well, unless you have tangible evidence other than the eminent suitability of our environment to our existence, then yes, this observation is denied as evidence.
harvey1 wrote:The WAP doesn't explain why something exists as it does,
Agreed -- it doesn't set out to do this. What it does tell us is that
there can be circumstances where we should not be surprised at what might otherwise seem like remarkable coincidences. It is this element of surprise that is the motivation for seeing the apparent fine-tuning as a deliberate and purposeful act. Harvey's take on this is as follows:
harvey1 wrote: it just explains how it is that under certain circumstances things could have been slightly different.
This sounds like an attempt to play down the importance of the WAP, which other than telling us that things could have been different, tells us that
sometimes we should not be surprised at remarkable coincidences when our existence depends on them. So when he follows up with an example:
harvey1 wrote:For example, in our air the percentage of nitrogen and oxygen is approximately 78/21%, but the WAP doesn't tell us why there are people that breathe air--it just explains how it is that under certain circumstances things could have been slightly different. Perhaps there could have been people who breathe a slightly different percentage of composition of air. That's not to say that the WAP explains how there could have been people had there been no air.
The real importance of the WAP in this example is that it shows that there is
nothing remarkable about the fact that the ratio of gasses in the atmosphere is just right for us to breathe. I think Harvey should have emphasised this more in his example. Instead it looks as though he has chosen, once more, to stress the fact that the WAP offers no actual explanation for why there is an atmosphere. Clearly if there wasn't, we wouldn't be debating the point and that in itself might be evidence for God -- but Given that we would probably also be able to contemplate different ratios for the gasses (i.e. other ratios that could also support intelligent life) then the particular ratio we have now should not be viewed as being "tailored to us", rather it is far more probable that we are "tailored to it". Likewise, it can be argued, it is also unnecessary for the universe to have been tailored for us.
harvey1 wrote:
So, the WAP is not sufficient reason to deny Hoyle's insight that the big bang insinuated God's existence. In my view, since Hoyle's time the big bang has been perceived differently by the atheist because the atheist has had no choice but to perceive it differently to remain an atheist. As part of that re-perceptual process they have ignored the significance of the evidence. But, who are we really kidding here? In my opinion it's not that most atheists aren't aware of the significance of a beginning, it's that they purposely choose to not be aware of this evidence. That's enmity of God, and that's why I say that most atheists have this enmity. That's okay to have enmity for a concept if it helps them get over their puppy who was run over when they were five, but I think that enmity is a motive to ignore evidence--tons and tons of evidence.
So the question for debate is this: Does the WAP cast serious doubt on the "tons of evidence" that so convinces Harvey and others -- when our environment may just be one of many, perhaps most of which would be unsuitable for life?