A redated post.
From Theodore Schick's The 'Big Bang' Argument for the Existence of God (1998*)
The traditional first-cause argument rests on the assumption that everything has a cause. Since nothing can cause itself, and since the string of causes can't be infinitely long, there must be a first cause, namely, god. This argument received its classic formulation at the bands of the great Roman Catholic philosopher, Thomas Aquinas. He writes:
In the world of sensible things, we find there is an order of efficient causes. There is no case known ... in which a thing is found to be the efficient cause of itself; for so it would be prior to itself, which is impossible. Now in efficient causes it is not possible to go to infinity, because . . . the first is the cause of the intermediate cause, and the intermediate is the cause of the ultimate cause.... Now to take away the cause is to take away the effect. Therefore, if there be no first cause among efficient causes, there will be no ultimate, nor any intermediate, cause . . . therefore it is necessary to admit a first efficient cause, to which everyone gives the name god.[4]
Saint Thomas's argument is this:
1. Everything is caused by something other than itself
2. Therefore the universe was caused by something other than itself.
3. The string of causes cannot be infinitely long.
4. If the string of causes cannot be infinitely long, there must be a first cause.
5. Therefore, there must be a first cause, namely god.
The most telling criticism of this argument is that it is self-refuting. If everything has a cause other than itself, then god must have a cause other than himself. But if god has a cause other than himself, he cannot be the first cause. So if the first premise is true, the conclusion must be false.
VR: Does Aquinas actually use the principle "Everything is caused by something other than itself?" Where is he getting that. This, of course, opens the door to the "Who Made God" objection. But Aquinas is not stupid. What exists contingently is what needs a cause, according to Thomas. This error was, of course, commited by Russell, and has been committed by "refutations" of the CA in thousands of introductory philosphy classes. But I was surprised to find it still surviving in print in 1998.
Labels: cosmological argument, St. Thomas Aquinas, Thomistic Cosmological Argument
In fact humans do not tend to respond positively to placebos. 70% or more of those taking them will not get better.
If 30% of those taking sugar pills will get better, then humans often respond positively to placebos. That's quite astonishing and fits well with other reasearch in psychology about the influence of positive thought about the future.
Actually, if one found out that they were taking a placebo they would want the real medicine and consequently increase their chances of survival.
I agree with this, but the point is that the placebo effect promoted survival in the past, not that it does now. Many traits don't serve survival well now but did so in the past (adrenaline in a stress situation).
But now you've jumped from an individual belief to a system of beliefs.
I agree that this is the best objection to the "systematic error" argument. I guess this could be turned into a good argument, but nobody has done this so far.
Natural selection does not select for individual beliefs. It selects for the mechanism which is capable of forming beliefs. A person whose brain is able to arrive at enough true beliefs to increase its chances of surviving the hazards of this dangerous world is, all else being equal, going to have a greater likelihood of passing on her genes than a person whose brain is less adept at good belief formation.
This is the typical answer to any argument from reason. I think the problem with this answer is that it requires and presupposes a huge metaphysical framework that is highly controversal and becomes less and less plausible. It requires the "naive" view of mental causation, the idea that the content of our thoughts directly influence behavior. David Chalmers has made a great case against the kind of mental causation required for this view.
Usually it also presupposes that evolution delivers an explanation for our phenomenological mental life. But this is highly implausible and disputed by many in the philosophy of mind. My zombie twin would have the same advante in natural selection that I have.
I can't make a cogent case against this objection in a comment here because it presupposes so much. But overall it seems to me that the premise of the objection is highly disputed and that contemporary philosophy of mind actually moves away from it. This makes the objection useless.
The reason why this objection is so common seems clear to me. It is very simple and fits very well with ordinary common sense convictions about the mental. This makes it attractive to anyone who is not familiar with the metaphysical problems it causes.