Sunday, February 27, 2011
Wednesday, February 9, 2011
Mackie on Leibniz's Cosmological Argument
Mackie does a decent job of summarizing what seems to me the classic objections to Leibniz's argument. It is formulated like this:
- "He assumes the principle of sufficient reason, that nothing occurs without a sufficient reason as to why it is so and not otherwise. There must be then a sufficient reason for the world as a whole, a reason why something exists rather then nothing. Each thing in the world is contingent, being causally determined by other things: it would not occur if other things were otherwise. The world as a whole, being a collection of such things, is therefore itself contingent. The series of things with events, and their causes, with causes of those causes and so on, may stretch back infinitely in time; but if so, then however far back we go, what we have is still contingent and therefore requires a sufficient reason outside the series. That is there must be a sufficient reason for the world other then the world. This will have to be a necessary being, which contains its own sufficient reason for existence." (pg 82)
- For something to exist contingent is for it to not exist if things had been otherwise, for something to be necessary is for something to exist even if things had been otherwise
- But what then our are grounds for thinking that the world as a whole could have been otherwise?
- It doesn't seem to me like this is a particularly strong objection, because it is quite conceivable that the big bang could have never occurred. But at the same time it's not clear to me what it means for things to be otherwise in relation to the big bang or some other cosmic event.
- Something is contingent if it might not have existed, for something to exist necessarily is for something to exist and not be the case that it might not have existed.
- But once it has been conceded that it is not logically impossible that this being exist, how then can it be said that it could not be the case that it might not have existed?
- This seems like a much better objection, I will have to go read some material written by supporters of this type of argument and see what they have to say about necessity.
Sunday, February 6, 2011
Mackie and Hume on Miracles
The first chapter of The Miracle of Theism, is entitled Miracles and Testimony. It is a discussion of David Hume's argument against miracles. Hume made the argument that no miracles could be believed by any rational person, unless the denial of the miracle's occurrence would take an even greater miracle, and even then the miracle would be believed in very tentatively. After much discussion Mackie states Hume's primary argument like this:
Now it doesn't seem to me as though B is at all problematic. If a miracle is to be used as evidence for something supernatural, pointing to something that could very well be natural does not constitute as good evidence for the supernatural. However A appears to be a bit more tricky, at least it needs some reinforcement as to why a miracle would be as immensely improbable that they are. To determine how unlikely any event x that violates a law of nature is it will be important to define what a law of nature actually is. Mackie says that "the laws of nature...describe the ways in which the world...works when left to itself, when not interfered with. A miracle occurs when the world is not left to itself" (pg 20). Now a miracle that violates the laws of nature is extraordinarily improbable because we have empirical evidence that what the laws of nature describe what nearly always, if not always, obtains. Laws of nature describe not only the way the world works, but the way it is. That means that in order to go about witnessing the falsifying of the laws of nature one would have to climb quite a tall mountain of probabilities. However laws of nature could be indeterminate, in other words they may not describe what always obtains but what the chances are of something obtaining. And this highlights the dirty fork of the argument, if it is the case that laws of nature do not always obtain then something which may appear to be a violation of a law of nature may actually not contradict nature at all. I have the feeling that what this leads to may be to strong of a conclusion, however for the most part this argument appears quite sound (though Hume has been challenged and supported by Bayes Theorem recently, this is probably the realm where the real arguing about this argument will take place.)
Here is a helpful discussion on this topic: http://philosophicaldisquisitions.blogspot.com/2011/02/miracles-series-index.html
- "Where there is some plausible testimony about the occurrence of what would appear to be a miracle those who accept this miracle have the double burden of showing that this event took place and that it violated the laws of nature" (pg 26)
- A: If it the miracle violates the law of nature then it is immensely improbable that the miracle occurred.
- B: If the event took place, but did not violate the laws of nature then it can be explained in natural terms.
Now it doesn't seem to me as though B is at all problematic. If a miracle is to be used as evidence for something supernatural, pointing to something that could very well be natural does not constitute as good evidence for the supernatural. However A appears to be a bit more tricky, at least it needs some reinforcement as to why a miracle would be as immensely improbable that they are. To determine how unlikely any event x that violates a law of nature is it will be important to define what a law of nature actually is. Mackie says that "the laws of nature...describe the ways in which the world...works when left to itself, when not interfered with. A miracle occurs when the world is not left to itself" (pg 20). Now a miracle that violates the laws of nature is extraordinarily improbable because we have empirical evidence that what the laws of nature describe what nearly always, if not always, obtains. Laws of nature describe not only the way the world works, but the way it is. That means that in order to go about witnessing the falsifying of the laws of nature one would have to climb quite a tall mountain of probabilities. However laws of nature could be indeterminate, in other words they may not describe what always obtains but what the chances are of something obtaining. And this highlights the dirty fork of the argument, if it is the case that laws of nature do not always obtain then something which may appear to be a violation of a law of nature may actually not contradict nature at all. I have the feeling that what this leads to may be to strong of a conclusion, however for the most part this argument appears quite sound (though Hume has been challenged and supported by Bayes Theorem recently, this is probably the realm where the real arguing about this argument will take place.)
Here is a helpful discussion on this topic: http://philosophicaldisquisitions.blogspot.com/2011/02/miracles-series-index.html
Saturday, February 5, 2011
Another Update 2/5
Here is a brief outline I plan to make on Mackie’s book The Miracle of Theism.
2. Cosmological Arguments: Leibniz's
3. Design Arguments
And some other stuff that I may begin to blog on are:
The Argument from Biblical Defects; It appears as though contradictions, forgeries, fairytales, ethical atrocities, and other embarrassments make Biblical Literalism quite untenable but perhaps they make the existence of God less likely as well.
Theodore Drange has an article on the subject Here
I have also been wondering if the existence Satan is logically coherent.
Further I have been reading a bit on ethics, surprise, particularly when it comes to how much one ought to give to poverty, or whether or not one should be a vegetarian.
Also here is some interesting commentary on Egypt with Slajov Zizek and Tariq Ramadan
Tuesday, January 18, 2011
"More Change we can't believe in"
more change we can't believe in
Where I found it: HERE (An interesting blog on Nietzsche and other extemporaneous topics)
And a podcast on Nietzsche Myths by the same fellow. Very educational!
Where I found it: HERE (An interesting blog on Nietzsche and other extemporaneous topics)
And a podcast on Nietzsche Myths by the same fellow. Very educational!
Saturday, January 15, 2011
AA on God as an explanation
In Arguing for Atheism Le Poidevin makes a central argument that theism is a bad explanation. He makes several arguments to back this claim. That theism takes the notions of cause and chance out of their original contexts (I have already discussed these points a bit in so I will not discuss them here), that God is not a good casual explanation, that personal explanations incorporating God are suspect, and that theism not have much explanatory virtue. I will deal with these 3 points backwards!
Poidevin highlights 2 explanatory virtues that theistic explanations having to do with a first cause do not have; they are not informative, and they have no “connections to generalizations” (pg 36). I don’t think it is controversial to say that positing a “first cause” is not at all informative; that is does not explain it is the case that x occurred or did not. Le Poidevin helps with this illustration: someone’s house was smoking and you walk over to a crowd which has gathered to watch the spectacular event. You ask a bystander for an explanation and he told you that a smoke-producing event had occurred. Le Poidevin thinks that introducing a first cause is as useful as the smoke-producing event explanation and I am inclined to agree—this however changes once you introduce and agent and try weave a personal explanation. A first cause also appears to have no connection to generalizations. To generalize is to say that “A-type events tend to cause, in certain situations, B-type events” (pg 42). An example of this would be chemicals combining in a certain context to produce another chemical. It is also clear that in order to generalize you need to have background knowledge; this background knowledge will include natural laws of causation and whatnot. However when we try to explain the existence of the universe we try to explain the existence of the laws and whatnot without the actual laws themselves; this means that no generalizations can be made. I believe Poidevin’s points are quite sound but they are not just problems for theistic explanations of the universe. They seem to describe a short of humble posture towards the explaining the universe; it appears as though we cannot casually explain it.
It however is quite apparent that not all explanations are causal explanations; another type of explanation (which is introduced by Swinburne in his book The Existence of God which I have yet to read) is a personal explanation. This involves an agent’s action and those agent’s intentions which led to that action. For example if a person does something they intend to achieve an end. If I have an intention to by nice to people I will try accomplish through a variety of means (in that way personal are quite teleological; “explanations in terms of purpose”). This is probably a gratuitously over complicated explanation of what a personal explanation, but Oh well I am quite exhaustedly incapacitated. It certainly seems like intentions are not causes in the normal way we describe causes but I believe I have already discussed this elsewhere. Any way, one way in which Le Poidevin points out those personal explanations are not the best at explaining the universe are is because they are contingent. Intentions are contingent because it seems like they could obtain or could not obtain. In this way if we are trying to explain the existence of the universe and point to intentions it seems like intentions either could be or could not be in the same way the universe could be or not be and if it is the case that the universe needs an explanation because it is contingent then intentions will need an explanation as well since they are contingent.
Finally Le Poidevin makes the argument that necessary facts cannot explain contingent ones. I have already made comments on thisHere as well as the intention objection that I discussed above.
Le Poidevin, Robin. Arguing for Atheism: An Introduction to the Philosophy of Religion. London: Routledge, 1996. N. pag. Print.
Monday, January 3, 2011
Now this is looks interesting (religious psychology)
I have just discovered this blog Ephiphenom, which seems to mostly summarize studies having to do with religion and whatnot. If I had another life I would love to study the psychology of religion.
Here is one interesting article, thought not altogether suprising: http://epiphenom.fieldofscience.com/2009/12/what-you-want-god-wants.html
Here is one interesting article, thought not altogether suprising: http://epiphenom.fieldofscience.com/2009/12/what-you-want-god-wants.html
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