Chapter 4 is where Dawkins lays it all out. It has his central ideas for “Why there almost certainly is no God”. As the title shows he's still open to the existence of God, but the proof has got to come from science. “Why there almost certainly is no God” is the scientific explanations for creation rather than the hand wave that believers accept.
One weakness of the chapter is that it is written as an answer to Intelligent Design (ID); doing away with all creation myths is just a byproduct. Dawkins begins by showing how ID consistently misunderstands evolution. In ID literature it is referred to as chance. Chance is the bugbear ID frightens people with into accepting their argument for design.
IDer: Do you really think we're here by chance?
Us: No.
IDer: Well we must be here by God. QED.
For an inquiring mind “God” as the answer answers nothing. The ID's answer of “God” is interchangeable with “magic”. If you think I'm being harsh, then take a look at Judge John E. Jones III's decisions in the recent Kitzmiller v. Dover Area School District, a case where the science (or lack thereof) of ID was put on trial. It must be noted that Judge Jones is a Republican and a churchgoer. If you can't even preach to the choir then its time to give up.
Dawkins then talks about the consciousness-raising power of natural selection. The way natural selection totally changed the way the problem of the abundance and diversity of life was looked at. Before natural selection it was assumed that it had to have come about by a creator, for only a being of immense power could have the ability to create the wonder of our living natural world. Natural selection turns this idea on its head; its actually small steps over a long time. Natural selection is a crane that builds rather than ID, which is a skyhook that suspends. Since Darwin's time the fields of genetics and molecular biology have added to the theory of natural selection, so that even without the fossil record there would be enough grounds to accept natural selection. Thank goodness scientists questioned what religion taught. But I digress, for Dawkins point is that by solutions like natural selection he'll show that creation doesn't require God.
Dawkins begins with life on earth and moves back to the formation of the cosmos. I'll look at Chapter 4 the other way around, because his strongest writing is in what he knows best, whereas when he writes about cosmology he's out of his field and quoting others. His arguments are to show that our existence on this planet at this time has little to do with chance.
'The Anthropic Principle: Cosmological Version' is an overview of current scientific theories for the origin of the universe (multiverse). I won't pretend to understand them. I did some cursory wikipediaing and was left with the understanding that I have little understanding. I feel pity for theoretical physicist's because after applying the last full measure of their brain power to this stuff their brain burns out and they are carted away to the funny farm to sculpt baskets out of gnocchi. Dawkins favors some theories over others, but I don't get why. Nothing is proved, but nothing can be. This is the origin of everything so right here, right now its going to theoretical. The point I took away from it was that at least these scientist are taking measurements, looking at data, forming theories. In short they are applying the scientific method to our deepest question, the origin of the universe, and not just saying “God”.
'The Anthropic Principle: Planetary Version' answers the Intelligent Designer's question about the chance of life appearing in this universe. In answering chance Dawkins invokes statistics:
It has been estimated that there are between 1 billion and 30 billion planets in our galaxy, and about 100 billion galaxies in the universe. Knocking a few noughts off for reason of ordinary prudence, a billion billion is a conservative estimate of the number of available planets in the universe... If the odds of life originating spontaneously on a planet were a billion to one against, nevertheless that stupefyingly improbable event would still happen on a billion planets. (165-166)
That's quite amazing. At a billion to one against we'd still have a conservative estimate of a billion planets. And remember, we're not talking about the chance of something which we could conceive of happening, say a planet existing made of fairy floss. We are talking about something which has happened - we are the living proof of that.
'The Worship of Gaps' apart from showing the vacuousness of ID as science, should also be of a warning to religious apologists to start searching for new sanctuaries for God before His refuges disappear altogether. The gaps spoken of are the gaps in scientific knowledge. ID's proponents argue that since science has no explanation for some things, it must be God. Dawkins sums it up, “'I [insert own name] am personally unable to think of any way in which [insert biological phenomenon] could have been built up step by step. Therefore it is irreducibly complex. That means it is designed.'” It is the laziest of reasonings, and at its heart unscientific. Dawkins goes on to give the analogy of watching a magician's trick. The art of the world class illusionist is such that we cannot fathom how the trick was done. But do we believe it to be supernatural? No, and the same should be with the natural world. Mysteries of the natural world require a natural explanation, not recourse to the supernatural. And so as science fills in the gaps, ID scurries for new gaps to house God.
Dawkins finishes the chapter with an overview of 6 points. For brevity I'll paraphrase:
For centuries their has been the problem of how to explain the apparent appearance of design in the universe.
The natural temptation has been to ascribe it to a designer.
This is false because it explains nothing. A crane not a skyhook is need.
The best crane we have so far is Darwinian natural selection. It build an improbable complexity from the gradual accumulation of the plausibly simply.
We don't yet have a crane for physics.
We shouldn't give up hope that a crane for physics will be found. After all, there was no crane for biology until fairly recently.
Labels: Dawkins