You have been challenging causation which is Kalam not Leibniz, Leibniz is the explanation version.
Im challenging both! All cosmological arguments are causal arguments. And explanation means cause if it is to make any sense at all in the context of the argument.
Give me an example of something occurring that has no cause. That thing must be something that if it had a cause that cause can be known by me. That is the easiest possible test I can think of for you to prove what you said is true. 1 single example please.
I think you rather misunderstand the argument. It isnt being proposed, preposterously, that causes dont exist; in fact we could not survive even for a few minutes without what we understand as the principle of causality, which is necessarily part and parcel of the natural world. But lets return to the matter in question, fundamentally the existence of God. Now forgive me but you are arguing to a supernatural cause by a celestial being of which there are no known examples and yet with truly startling hypocrisy you reject an uncaused cause out of hand! And that seems to me to be a partiality that cannot be justified. Once youve allowed the principle of one unnatural or metaphysical concept you cannot then decry another as inadmissible.
Further down the page I argue that the primary premise of the Kalam is falsely inferred, and if an external cause cannot be demonstrated then cause is a phenomenon that belongs to the world. And on that account there can be no demonstrable external cause. Now its all very well to say give me an example of something occurring without a cause because there are, at least as far as we know, no such examples; and nor would we expect there to be in the universe. But what the issue comes down to, as with every argument including the Kalam, is whether the conclusions we come to are free of contradiction and logical absurdities, and, like it or not, the universe coming into existence without an identifiable cause is the only such example that isnt contradictory. Of course at some point in the future that conclusion may be proved conclusively wrong by cosmologists or physicists and I will bow to that knowledge, but nevertheless the problem of non-contradiction will still remain a serious problem for a theist explanation.
I have seen centuries of attempts to point out these glaring flaws to no avail. The argument keeps marching along from generation to generation without any loss of fidelity while it's challenges do not. I find most of these counter arguments use the grey areas of ambiguity and uncertainty which are minimal in reality but are amplified through the roof by cognitive dissonance to make up for the fact that no good argument actually exists. However do your worst and let's see what you got.
P1. Whatever begins to exist has a cause of its existence
P2. The universe began to exist
Conclusion: Therefore, the universe was caused to exist
The move from P2 to the conclusion doesnt follow since the major premise (P1) cannot be demonstrated. This is because although the universe may have begun to exist, nothing within the material world is seen to begin to exist but only changes form, therefore P1 can only be based on the universe as a whole beginning to exist. But an argument cannot be made that the universe as a whole began to exist and therefore the universe requires an efficient cause because that is simply to assume what you are supposed to prove. In other words, that would be a circular argument where the major premise and the conclusion are the same as I show below:
Any universe that begins to exist has a cause
The universe began to exist
Therefore the universe has a cause
The argument is completely removed from inferential content and is now just making a bald assertion.
Here is the corrected argument (and compare the primary premise with that of the Kalam):
P1. The universe began to exist
P2. Everything in the universe has a cause
C: Everything in the universe began to exist
P1. Current cosmological thinking is that the world and everything within it began with the Big Bang, and that is taken to mean that there was nothing before it.
P2. The phenomenon of cause and effect is observed in all things. (This is relatively uncontroversial even though it can never be demonstrated certain or true)
Conclusion:
If causality began with the world then self-evidently it cant be argued that some external cause brought the world (including cause and effect) into being. And that effectively cancels out the ogre that is an infinite regress of causes and also removes the need for God since without cause there can be no causal agency.
Well I consider experience far more real that metaphysical speculation. Which is why if Christianity di not offer experientially evidence/roof I would have been even harder to convince than I was. But you go ahead with your metaphysics. Lets see what you have here.
Christianity is just a believers' argument, and it is also metaphysical in pretending to explain the existence of the universe.
However remember this. It is not enough to show my arguments is less than perfect, you must show yours is more likely than mine. Good luck.
No, thats not correct. What I have to do, and what I have done, is to show an argument or a proposition to be contradictory or otherwise untenable.