You are confusing "nothing", as lack of awareness (being dead), with nothing as a physical vacuum with no particles (and I can accept also: with no quantum fields, even if Krauss doesn't accept this).
There is no evidence that our awareness can arise from nothingness. All the evidence points to awareness being cyclical and continuous.
Since the main religions don't believe in resurrection of the soul on another body (and I agree with them on this point) you probably agree that before we were conceived we were nothing (we weren't a being with awareness, even if our initial atoms already existed before that).
No, I don't agree with that and I have made posts explaining why. Awareness is continuous and cyclical, it does not "go somewhere" upon death or upon falling asleep.
On the survival of the conscience after death, the burden of evidence is on you. When I see a corps I can confirm he isn't aware of anything. You, or any other theist, clearly didn't fulfill it.
So what about the Eisenbeiss case? What about Pam Reynolds who had an NDE during brain death and with no blood flow? What about Thonnard's study which confirmed that NDE memories are at least as real as valid memories? Each of these cases document anomalies in medical understanding which would be more simply explained by way of the survival hypothesis.
Your statement that "The brain cannot function (i.e. have perceptions, form memories, etc.) until blood flow is restored" is a factual assertion. I saw no testable evidence for that.
Comprehensive reviews on brain injury and cardiac arrest are available. They support my assertions about brain function. Statements made by skeptic Chris French and van Lommel in New Scientist magazine also support these assertions.
As long as the neurons are alive, they can have some activity, even with no blood flow. The same happens with other cells. Actually, some still develop even after we are really dead (nails, hair).
The neural activity relevant for consciousness is observed by the EEG, so with no blood flow and no EEG there cannot be consciousness as experienced by the patients. Awareness requires higher mental functioning which will always show up on the EEG (according to the physicalist model of neuroscience). Therefore, it does not matter if the neurons are alive because the EEG will in fact tell us if the brain is non-functional, and this non-functioning is the key piece of information.
The primary objection to your claim is that a drug capable producing such a wide variety of "side-effects" is probably not the primary cause of such effects but is more likely an ingredient in opening up a huge area of experience which is difficult to classify.
Because NDEs contain so many elements,
a number of different complementary explanations are needed to account for this complexity. But in most cases, each explanation focuses on only one element of the NDE and ignores the others.
See more:
http://www.spiritualtravel.org/OBE/nde_arguments.htmlSo, we have evidence that those hallucinations can be reproduced by chemicals, including the "out of the body sensation".
Actually, the evidence shows that these memories are at least as valid as real memories. As mentioned earlier, OBE is only one element of NDE, but NDE requires a number of different complementary explanations.
Krauss's theory, even if he couldn't answer everything, is a major blow against religion. He explained the origin of particles. It's no small thing.
Actually, he was not able to explain how something (awareness) can come from nothing, which is what he set out to do. Actually this new "universe from nothing" is little different from the one offered by Isaac Asimov, so THIS POSTURING IS NOTHING NEW.
But as you confessed, theists also can't explain everything, mainly the origin of their god. So, explanation power isn't on your side either.
I confess that I cannot explain everything. You confess that all NDEs are hallucinations. If that were so, then how can you explain Thonnard's results? And do you believe that Eisenbeiss was part of a conspiracy like Moloch does?