Ironically. I have argued with him on this point as it is similar to those like Christine and others who believe there was probably nothing in existence before the universe.
Why do you need to lie. I have never said there was nothing before the universe. I have however stated in opposition to your incredulity that a universe from nothing is a possibility in the quantum realm, and explained to you the folly of making assumptions about what is unknown.
You claim I lie yet in the next sentence admit to a belief in the possibility of s universe from nothing. A mathematical model of a hypothetical nothing is not proof of a real nothing, the total absence of evidence of a real nothing is where the science is at.
Actually, Christine didn't lie.
You have always complained about my grasp for the English grammar and syntax - which i won't deny being true, my English is below average - but here it is you who fail to understand Christine.
She stated that it might be possible, by using the word,"possibility"; you are overlooking that possibility is actually expressing neutrality, that it "might be" or it "might be not", which I view to a level of uncertainty, in this case, about the universe's origin.
You are wrongly presuming she is making "positive claim"; she isn't. Possibility could go either ways, so it is neither positive, nor negative.
I don't think we have enough evidences to the universe came from nothing or that the universe have always existed as it now or that it existed in a different and more primal form.
I doubting the probability of the universe came into existence from nothing. There are no evidences for such a model.
But there are also no evidences for eternal universe, or for the multiverse model, because it is still largely theoretical and hypothetical.
The current Big Bang model doesn't say it come from nothing, because the singularity is not nothing.
As I have stated many time before, we are currently stuck at the Recombination epoch, our current science and technology cannot penetrate and observed beyond the start of the Recombination epoch. The oldest observable, detectable and measurable light, is the Cosmic Microwave Background Radiation (CMBR), which was emitted in this Recombination epoch (started 377,000 years after the Big Bang).
Earlier epochs to the Big Bang, the universe was opaque, because even older light (eg Cosmic Neutrino Background (CvB) radiation) were absorbed by plasma state of the universe.
If we cannot see beyond the CMBR and the Recombination epoch (RE), then everything before RE have not been detected and verified. That being the case, we cannot possibly know (with certainty) that the universe is eternal, oscillating (between expansion and contraction, or cycle of Bang and Crunch) or was nothing. Any of these scenarios could be possible, but we don't know.