Mr. Tree Shows Us How Irrefutable The Kalam Cosmological Argument Is

So one of the regulars decided that the best way to defeat theism would be to try and show how its best arguments don't work. Actually that makes sense! Find out what it is we actually believe and what evidence we use, and show how it is wrong. Good work Mr. Tree! Now you're working on our level!
Let's see how well he does.

Mr. Tree on this occasion has put together his explanation for why the Kalam Cosmological Argument fails.

 

It's great that he has no problem with P1. We're already agreeing on half the premises. So it's only P2 where there's disagreement.

2&3: Relies on equivocation, what do we rightly mean by ‘the universe’. The original arguments from which this is derived did not restrict themselves to asking “where did the universe that sprang from the big bang come from”. The ancient philosophers were asking where the world came from and working back towards the cause of all things, the universe, the totality of existence, reality.

Whatever the ancient people who used similar logic to the KCA were talking about is completely irrelevant to what we're talking about today. We might have taken some inspiration from them, but things have changed and we use the argument in its modern form.
If you're worried about definitions, then it's simple and it's no secret what we mean by the word 'universe'. We mean this space/time thing that started at the Big Bang, is expanding, and will die out in a heat death.
So no... there is no equivocation. We don't say 'universe' when we mean whatever the ancients were talking about.

Atheists Need To Prove That The Universe Is Infinite And Eternal

Current science is very much against atheism (although a lot of scientists won't admit it). It's basically proven that God exists. So atheists have their work cut out for them if they don't want to go along with that. They have to prove that the stuff cosmologists and physicists are constantly affirming is false.

When talking about the beginning of the universe (backed by Big Bang Theory, Red Light Shift etc.), if atheists want to avoid the logical conclusion of a higher supernatural power, they have to somehow show that the universe could either create itself, or was never created in the first place.

Here's a noble attempt from one of the regulars.

P1. If something cannot come from nothing, then the Universe is eternal.  
P2. Something does not come from nothing.
C1. Therefore, the Universe is eternal.

Does this work? We agree completely that something can't come from nothing. 0+0=0 and will never be anything else. So there must have been something to start with.
Our scientific evidence tells us that the Big Bang was the beginning of the universe, so we have to deal with that. But Mr Truth here is saying that there can't have been a beginning.
Something must be wrong here, because our evidence tells us that the universe is not eternal.

The conclusion here does logically follow if the two premises are true. We're all certain that P2 is true, so P1 must be the problem. If you haven't seen it by now yourself, I'll point out that simply P1 is a sentence that doesn't make sense on its own - not as most people understand it anyway.