<p>To prove the non-existence of god we first need to define the word "god". When christians talk about god they mean an almighty being. This, I think, is the only god that holds, since it is the only god that can be logically justified. </p>
<p>What do we mean by existence? The very definition for existence is that a thing is said to exist if it relates in some way to some other thing. That is, things exist in relation to each other. For us, that means that something is part of our system ('The known world'). God is defined to be infinite, in which case it is not possible for there to be anything other than god because "infinite" is all-inclusive. But if there is nothing other than god then either god cannot be said to exist for the reason just explained, or god is the known world, in which case, by definition, god is not a god. </p>
<p>Let's say that everything must be created, and that was done by an omnipotent god. A god which stands above time, space, moral and existence, which is self containing and in it self has it's own cause. This entity can surely be replaced by the known world. The world stands above time, space, moral, existence, is self containing and in it has it's own meaning. Most theists agree that god has a nature. Then we must raise the question, who created god's nature? If we just accept that god has a nature and exists without a cause, why not say that the known world just is and that the laws of physics are what they are, without a cause?</p>
<p>God is not really an explanation, only a non-explanation. It is impossible to gain information from non-information so God as an explanation is a dead end. When we have said that the reason for something is that 'god did it that way' there is no way to understand it any further. We just shrug our shoulders and accept things as they are. To explain the unknown by god is only to explain how it happened, not why. If we are to investigate the world and build our views of life from the world, we cannot assume a god. Because adding god as an explanation leaves as many, if not more questions than it explains, god has to be removed if we are serious in investigating the world. </p>
<p>There are things that are impossible to do. For example nobody can cover a two-dimensional surface with two-dimensional circles, without making them overlap. It is impossible to add the numbers two and two and get 666. You can not go back in time (without passing an infinite entropy barrier). The number of things that are impossible to do are almost infinite. If god were to be almighty he would be able to do them, but it's impossible to do so.</p>
<p>Some people say that he can only do things that are logically possible to do, but what is? Is it logically possible to walk on water? Is it logically possible to rise from the dead? Is it logically possible to stand above time, space and all other dimensions - and still exist? I'd say that everything which violates the laws of physics are logically impossible and thus omnipotence is logically impossible. Besides if omnipotence is a relative quality there is no way to tell omnipotence from non-omnipotence. For omnipotence to be a valid expression it must be absolute, but we have no objective criteria to measure omnipotence so the word itself is useless. </p>
<p>Can god make a rock that is too heavy for him to carry? Can god build a wall that even he can't tear down?</p>
<p>Also, if god knows everything, he knows what he will do in the "future" (in any dimension, not necessary the time dimension). He must have known that from the very start of his own existence. Thus god's actions are predestined. God is tied by faith, he has no free will. If god has no free will god is not omnipotent. Another way to put it is that to be able to make plans and decisions one must act over time. If god stands above time he can not do that and has no free will. Indeed, if god stands above all dimensions god is dimensionless - a singularity, nothing, void!</p>
<p>Besides there can exist no free wills at all if god is almighty. If you had a free will, god wouldn't know what you would do tomorrow and wouldn't be omnipotent. </p>
<p>If everything has a source and god is that source, then god must have existed without it before he created it. So if god created time and space, he must live outside of time and space. Thus he is non-existent. If all life must come from something and that is god, god is not alive and hence non-existent. If moral must come from god, god lacks moral. If logic comes from god, god is illogic. If nature comes from god, god is unnatural. If existence comes from god, god is non-existent. If god is the cause of everything, god is void</p>
<p>If somebody would pray to god and god would listen, the laws would change to achieve the desired result. Thus the world would be different and the prayer would never have been said. Besides god would already (in an "above time" sense of view) know that you would pray, and already have changed the world. Prayers would be totally meaningless. We would already live in the best world possible, and any prayer would be to doubt the wisdom of god.</p>
<p>Even worse: For every prayer said, god has not acted, or else the prayer had been undone. This means that the more people have prayed, the more bad things in the world have persisted. Therefore, the more you pray, the more evil persist (provided god exists and stands above time).</p>
<p>A much better way to change the world is to do it yourself. Then you would know that it was you who made the world better. The effect of prayers are not scientific provable, whilst the effect of actions are. Instead of praying you should set to work at improving your situation.</p>