One argument that theists sometimes bring up in arguments with atheists is "What proof would convince you of the existence of God?" the implication being that the existence of the universe and all the wonderful things in it is proof enough.
Well, if you define God as just being the things we don't understand (currently the big bang and the mysteries of the human mind) then that's a valid argument, but the resulting God is just the "God of the gaps" who has been shrinking rapidly as science improves. Pretty much everything else in the universe (excepting only a few relatively minor details) we have good working scientific theories about. I think eventually we'll come to understand scientifically both the human mind and the big bang as well (in fact, I think it will not be possible to understand either without the other).
Most theists don't seem to believe in just a God who created the universe at the beginning and then left it alone - they believe things like "praying works". This suggests a simple test involving praying for (for example) heads in a coin toss and then seeing if there is any statistically measurable effect. Once an effect is found, the experiment could be refined to determine which religion and sect has the most effective prayers. Theology would become a science. Theists will usually claim that prayers don't work that way, but ultimately they either work or they don't, and if they do work then that effect can be observed and experimented on. I understand some such experiments have been done, and have shown no statistically significant effects with the possible exception of medical patients who know they are being prayed for. This can be attributed to the placebo effect.
Another example of such a possible proof comes from the observation that "if God is so great, why does he keep needing money to fix church roofs?" I would find it a very compelling piece of evidence towards God's existence if consecrated buildings did not suffer the same kinds of wear and tear that unconsecrated buildings do.
A CRITIQUE OF THE VOID
A.Circular Reasoning
In his article ‘The other side of time’ (2000) scientist Victor J. Stenger has written that as per the theory of quantum electrodynamics electron-positron (anti-electron) pairs can appear spontaneously for brief periods of time practically out of nothing, which clearly shows that anything that has a beginning need not have to have a cause of that beginning.
From here he has concluded that our universe may also come literally out of nothing due to quantum fluctuation in the void, and therefore we need not have to imagine that God has done this job.
But is it true that electron-positron (anti-electron) pairs are appearing literally out of "nothing"? Are scientists absolutely certain that the so-called void is a true void indeed? Because here there is a counter-claim also: God is there, and that God is everywhere. So actually nothing is coming out of "nothing", only something is coming out of something. Here they will perhaps say: as there is no proof for God’s existence so far, so why should one have to believe that the void here is not a true void? But even if there is no proof for God’s existence, still then it can be shown that scientists’ claim that the universe has literally come out of nothing is a pure case of circular reasoning. If believers say that the void is not a true void at all, and if scientists still then hold that it is nothing but a void, then this is only because they are absolutely certain that God does not exist, and also because they think that God’s non-existence is so well-established a fact that it needs no further proof for substantiation. But if they are absolutely certain that God does not exist, then they are also absolutely certain that God is not the architect, designer, creator of our universe, because it is quite obvious that a non-existent God cannot be the architect, designer, etc. So their starting premise is this: God does not exist, and therefore our universe is definitely not the creation of a God. But if they start from the above premise, then will it be very difficult to reach to the same conclusion?
But their approach here could have been somehow different. They could have said: well, regarding void, it is found that there is some controversy. Therefore we will not assume that it is a void, rather we will prove that it is such. Then they could have proceeded to give an alternate explanation for the origin of the universe, in which there will be neither any quantum fluctuation in the void, nor any hand of God to be seen anywhere. And their success here could have settled the matter for all time to come.
By simply ignoring a rumour one cannot kill it, rather it will remain as it is. But if one takes some more trouble on him and exposes that it is nothing but a rumour, then it will die a natural death with no further chance of revival. Let us say that the saying that there is a God and that He is everywhere is nothing but a rumour persisting for thousands of years among mankind. What scientists have done here is this: they have simply ignored the rumour and thus kept it alive. But it would have been far better for them if they could have killed it, as suggested by me.
B. “Circular Reasoning” Case Reexamined
There can be basically two types of universe: (1) universe created by God, supposing that there is a God; (2) universe not created by God, supposing that there is no God. Again universe created by God can also be of three types:
(1a) Universe in which God need not have to intervene at all after its creation. This is the best type of universe that can be created by God.
(1b) Universe in which God has actually intervened from time to time, but his intervention is a bare minimum.
(1c) Universe that cannot function at all without God’s very frequent intervention. This is the worst type of universe that can be created by God.
Therefore we see that there can be four distinct types of universes, and our universe may be any one of the above four types: (1a), (1b), (1c), (2). In case of (1a), scientists will be able to give natural explanation for each and every physical event that has happened in the universe after its origin, because after its creation there is no intervention by God at any moment of its functioning. Only giving natural explanation for its coming into existence will be problematic. In case of (1b) also, most of the events will be easily explained away, without imagining that there is any hand of God behind these events. But for those events where God had actually intervened, scientists will never be able to give any natural explanation. Also explaining origin of the universe will be equally problematic. But in case of (1c), most of the events will remain unexplained, as in this case God had to intervene very frequently. This type of universe will be just like the one as envisaged by Newton: "Gravity explains the motions of the planets, but it cannot explain who set the planets in motion. God governs all things and knows all that is or can be done." So we can with confidence say that our universe is not of this type, otherwise scientists could not have found natural explanation for most of the physical events. In case of type (2) universe, here also there will be natural explanation for each and every physical event, and there will be natural explanation for the origin of the universe also. So from the mere fact that scientists have so far been able to give natural explanation for each and every physical event, it cannot be concluded that our universe is a type (2) universe, because this can be a type (1a) universe as well. The only difference between type (1a) and type (2) universe is this: whereas in case of (1a) no natural explanation will ever be possible for the origin of the universe, it will not be so in case of (2). Therefore until and unless scientists can give a natural explanation for the origin of the universe, they cannot claim that it is a type (2) universe. And so, until and unless scientists can give this explanation, they can neither claim that the so-called void is a true void. So scientists cannot proceed to give a natural explanation for the origin of the universe with an a priori assumption that the void is a real void, because their failure or success in giving this explanation will only determine as to whether this is a real void or not.
C. Scientists have taken a forbidden step
This is about scientists’ claim that our universe has originated from nothing due to a vacuum fluctuation. Here I want to show again that this claim cannot be sustained by reason.
Abbreviation: origin of the universe from nothing due to vacuum fluctuation (OUNVF)
We all know that the theorems in Euclidean geometry generally start with some basic assumptions that are accepted as true without any proof. These basic assumptions are called axioms. Similarly scientific theories also start with some basic assumptions. These are called postulates. So far these postulates of scientific theories were all God-independent. I am going to explain what I want to mean by the term “God-independent”. Let us suppose that P is a postulate. Now it may be the case that there is a God. Or it may be the case that there is no God. Now let us suppose it is the case that there is a God, and we find that P is not affected. Again let us further suppose that it is the case there is no God, and again we find that in this case also P is not affected. Then we can say P is God-independent. But in the case under consideration the basic assumption with which scientists start is not at all God-independent. Rather we can say that it is very much God-dependent. Their basic assumption here is this: the void is a real void, and it is nothing but a void. Now if it is the case that there is a God, then this assumption is very much affected, because the void is no longer a real void. If, and only if, it is the case that there is no God, then only it is a real void. Therefore when scientists are saying that the void is a real void, then they are also saying it indirectly that it is the case there is no God, or, that it is a fact there is no God. But my question here is this: are these scientists now in a position to say so? Have their knowledge of the empirical world and its laws and its workings up till now made them competent enough to declare at this stage that there is no God? Because here two points will have to be considered:
1) They have not yet been able to give a natural explanation for the origin of the universe.
2) Similarly they have not yet been able to give a natural explanation for the fact that our universe has become habitable for life, whereas it could have been barren and lifeless as well.
Now it may so happen that scientists completely fail to give any natural explanation for both 1) and 2). In that case will it not be too early for them to suppose that the void is a real void? Because if they are unsuccessful, then they do not know whether there is a God or not, and therefore neither do they know whether the void is a real void or not. But if they are successful, then they definitely know that there is no God. Then only they can say that the void is a real void. So we can say that 1) and 2) are two hurdles that the scientists must have to cross before they can arrive at a place from where they can boldly declare that God does not exist. This is the place that may be called scientists’ heaven. Because once they can reach there, then they will have no hesitation to deny the existence of God. Because now they have explained the alpha and omega of this universe, starting from its origin up to the coming of man on earth and further beyond, and nowhere they have found any hand of God influencing the course of events in any way. But, to arrive at that place can they take any undue advantage? Or, can they try to reach there by any unfair means? Can they already assume that there is no God, and based on that assumption, can they try to cross any one, or both, of these two hurdles? But in case of 1) they have just done that. That is why I want to say that OUNVF is a pure case of circular reasoning.
D, Properties of a Whole Thing
If at the beginning there was something at all, and if that something was the whole thing, then it can be shown that by logical necessity that something will have to be spaceless, timeless, changeless, deathless. This is by virtue of that something being the whole thing. Something is the whole thing means there cannot be anything at all outside of that something; neither space, nor time, nor matter, nor anything else. It is the alpha and omega of existence. But, if it is the whole thing, then it must have to be spaceless, timeless, changeless, deathless. Otherwise it will be merely a part of a bigger whole thing. Now let us denote this something by a big X. Now, can this X be in any space? No, it cannot be. If it is, then where is that space itself located? It must have to be in another world outside of X. But by definition there cannot be anything outside of X. Therefore X cannot be in any space. Again, can this X have any space? No, it cannot have. If we say that it can have, then we will again be in a logical contradiction. Because if X can have any space, then that space must have to be outside of it. Therefore when we consider X as a whole, then we will have to say that neither can it be in any space, nor can it have any space. In every respect it will be spaceless. For something to have space it must already have to be in some space. Even a prisoner has some space, although this space is confined within the four walls of his prison cell. But the whole thing, if it is really the whole thing, cannot have any space. If it can have, then it no longer remains the whole thing. It will be self-contradictory for a whole thing to have any space. Similarly it can be shown that this X can neither be in time, nor have any time. For a whole thing there cannot be any ‘before’, any ‘after’. For it there can be only an eternal ‘present’. It will be in a timeless state. If the whole thing is in time, then it is already placed in a world where there is a past, a present, and a future, and therefore it is no longer the whole thing. Now, if X as a whole is spaceless, timeless, then that X as a whole will also be changeless. There might always be some changes going on inside X, but when the question comes as to whether X itself is changing as a whole, then we are in a dilemma. How will we measure that change? In which time-scale shall we have to put that X in order for us to be able to measure that change? That time-scale must necessarily have to be outside of X. But there cannot be any such time-scale. So it is better not to say anything about its change as a whole. For the same reason X as a whole can never cease to be. It cannot die, because death is also a change. Therefore we see that if X is the first thing and the whole thing, then X will have the properties of spacelessness, timelessness, changelessness, deathlessness by virtue of its being the whole thing. It is a logical necessity. Now, this X may be anything; it may be light, it may be sound, or it may be any other thing. Whatever it may be, it will have the above four properties of X. Now, if we find that there is nothing in this universe that possesses the above four properties of X, then we can safely conclude that at the beginning there was nothing at all, and that therefore scientists are absolutely correct in asserting that the entire universe has simply originated out of nothing. But if we find that there is at least one thing in the universe that possesses these properties, then we will be forced to conclude that that thing was the first thing, and that therefore scientists are wrong in their assertion that at the beginning there was nothing. This is only because a thing can have the above four properties by virtue of its being the first thing and by virtue of this first thing being the whole thing, and not for any other reason. Scientists have shown that in this universe light, and light only, is having the above four properties. They have shown that for light time, as well as distance, become unreal. I have already shown elsewhere that a timeless world is a deathless, changeless world. For light even infinite distance becomes zero, and therefore volume of an infinite space also becomes zero. So the only conclusion that can be drawn from this is that at the beginning there was light, and that therefore scientists are wrong in asserting that at the beginning there was nothing.
Another very strong reason can be given in support of our belief that at the beginning there was light. The whole thing will have another very crucial and important property: immobility. Whole thing as a whole thing cannot move at all, because it has nowhere to go. Movement means going from one place to another place, movement means changing of position with respect to something else. But if the whole thing is really the whole thing, then there cannot be anything else other than the whole thing. Therefore if the whole thing moves at all, then with respect to which other thing is it changing its position? And therefore it cannot have any movement, it is immobile. Now, if light is the whole thing, then light will also have this property of immobility. Now let us suppose that the whole thing occupies an infinite space, and that light is the whole thing. As light is the whole thing, and as space is also infinite here, then within this infinite space light can have the property of immobility if, and only if, for light even the infinite distance is reduced to zero. Scientists have shown that this is just the case. From special theory of relativity we come to know that for light even infinite distance becomes zero, and that therefore it cannot have any movement, because it has nowhere to go. It simply becomes immobile. This gives us another reason to believe that at the beginning there was light, and that therefore scientists are wrong in asserting that at the beginning there was nothing.
I know very well that an objection will be raised here, and that it will be a very severe objection. I also know what will be the content of that objection: can a whole thing beget another whole thing? I have said that at the beginning there was light, and that light was the whole thing. Again I am saying that the created light is also the whole thing, that is why it has all the properties of the whole thing. So the whole matter comes to this: a whole thing has given birth to another whole thing, which is logically impossible. If the first thing is the whole thing, then there cannot be a second whole thing, but within the whole thing there can be many other created things, none of which will be a whole thing. So the created light can in no way be a whole thing, it is logically impossible. But is it logically impossible for the created light to have all the properties of the whole thing? So what I intend to say here is this: created light is not the original light, but created light has been given all the properties of the original light, so that through the created light we can have a glimpse of the original light. If the created light was not having all these properties, then who would have believed that in this universe it is quite possible to be spaceless, timeless, changeless, deathless? If nobody believes in Scriptures, and if no one has any faith in personal revelation or mystical experience, and if no one wants to depend on any kind of authority here, and if no one even tries to know Him through meditation, then how can the presence of God be made known to man, if not through a created thing only? So, not through Vedas, nor through Bible, nor through Koran, nor through any other religious books, but through light and light only, God has revealed himself to man. That is why we find in created light all the most essential properties of God: spacelessness, timelessness, changelessness, deathlessness.
Footnote: If the universe is treated as one whole unit, then it can be said to be spaceless, timeless. I first got this idea from an article by Dr. Lee Smolin read in the internet. Rest things I have developed. This is as an acknowledgement.
E. CLIMAX
I think we need no further proof for the existence of God. That light has all the five properties of the whole thing is sufficient. I will have to explain.
Scientists are trying to establish that our universe has started from nothing. We want to contradict it by saying that it has started from something. When we are saying that at the beginning there was something, we are saying that there was something. We are not saying that there was some other thing also other than that something. Therefore when we are saying that at the beginning there was something, we are saying that at the beginning there was a whole thing. Therefore we are contradicting the statement that our universe has started from nothing by the statement that our universe has started from a whole thing.
I have already shown that a whole thing will have the properties of spacelessness, timelessness, changelessness, deathlessness, immobility (STCDI). This is by logical necessity alone. It is logically contradictory to say that a whole thing can have space. Let us suppose that the whole thing is having space. Then the so-called whole thing along with the space that it is having will constitute the real whole thing. If my arguments that I have offered so far to show that the whole thing will always have the above five properties by virtue of its being the whole thing are sound, and if they cannot be faulted from any angle, then I can make the following statements:
1. In this universe only a whole thing can have the properties of STCDI by logical necessity alone.
2. If the universe has started from nothing, then nothing in this universe will have the properties of STCDI.
3. If the universe has started from a whole thing, then also nothing other than the initial whole thing will have the properties of STCDI. This is only because a whole thing cannot beget another whole thing.
4. But in this universe we find that light, in spite of its not being a whole thing, is still having the properties of STCDI.
5. This can only happen if, and only if, the initial whole thing itself has purposefully given its own properties to light, in order to make its presence known to us through light.
6. But for that the initial whole thing must have to have consciousness.
7. So, from above we can come to the following conclusion: the fact that light, in spite of its not being a whole thing, still possesses the properties of STCDI, is itself a sufficient proof for the fact that the universe has started from a conscious whole thing, and that this conscious whole thing is none other than God.
I read the whole thing, and it still doesn't make any sense - it seems like you feel that the argument with the most words carries the most weight. The crux of your argument seems to be in step E5 which can essentially be rephrased as "we don't understand the beginning of the universe therefore a conscious process must be involved" but you don't give any more justification to this, nor to how this consciousness can exist outside/independently of the universe (in other words, you aren't even trying to refute my original argument).
While quantum fluctuation is one possible hypothesis about the conditions surrounding the beginning of the universe, it's qualitatively different from the kind of quantum fluctation involved in virtual pair creation. There are also plenty of other hypotheses such as a cyclic universe. No educated atheistic physicist would argue that we understand the beginning of the universe completely - it's still a mystery and may always be a mystery (there may be a perfectly good scientific explanation that is just lost to history). The claim that God created the universe doesn't follow from that.
I don't understand a theist trying to "prove" the existence of God.
Believing in God is a matter of faith rather than science and can neither be proven nor disproven by science.
The closest event to being proven or disproven is whether or not Jesus died and returned to life and that is specific to one theistic faith. The best proof of that is the reaction of his inner circle but that can be attacked with the "swoon" theory that he was merely in bad shape and not actually dead or has been attacked on a shared mutual hallucination/delusion theory.
In the end theist and atheist are left with two options.
1. Tolerate the beliefs of each other since science cannot establish a creator nor disprove one (standard answer is science just explains God's process and the process is not the creator).
2. Be intolerant of one another and continue along in the usual human condition of disagreement.
While it's impossible to disprove the concept of God completely (since any experimental evidence available to us could have been planted by God to lead us off the trail), science has disproved many specific things which are stated as facts in the holy books of various religions. The adherents of these religions either claim "oh that's just a parable, it's not meant to be taken literally", attack the motives of the scientists while disregarding the evidence or just ignore the problem. However, increasingly theists are being converted away from primitive superstition towards more useful activities. So from the point of view of the atheist/rationalist/humanist the arguments are worth it.