Probably the contrarian take, but an informed one.

Near death experiences are probably the best way we have to assess the nature of reality.

Now, it's almost impossible to reach people who aren't ready with any arguments, but I'll outline some possible steps for anyone who's on the verge.

- Go to youtube, type in NDE and listen to a few

- Try to come up with a "rational" explanation (hallucinations, the brain dumping DMT, preconceived notions from Hollywood, the general culture and so on)

- Assess whether these make any sense under the conditions that NDEs occur, and scratch the ones that don't. Then watch a few more and you'll have to reject more still.

In particular, what was convincing to me, is how very very similar the cases are and that they happen to tribes living at a stone age technological level with no contact to Hollywood, and that there is a described case from Plato from over 2000 years ago that is identical to modern cases.

In the end, my conclusion is that objective reality has to be partially rejected, and all experience is the combination of some "nature of reality" as interpreted by each individual. This leads to clear contradictions if one assumes that there is one objective reality. Case in point, in NDEs there are a couple of common stages, and experiencers go through some or all of these, most often only some. One is traveling from the location of death to a heavenly realm. For westerners this often is flying through a star trek like hyperspace tunnel, while for stone age people they might be in a canoe that travels by itself to a distant island. So the nature of it is something like being pulled silently without effort towards a point in a manner that isn't part of the experiencer's notion of what's possible, and it is then realized and interpreted by each individual in the closest way that they can relate to.

I never remotely believed this because I don't even believe in a "me" really.

One hard hit in the head can literally change your personality entirely, then you have alzheimers and all the other degenerative brain diseases that will erase "you". Even if you avoid all that "you" will be wildly different every 15-20 years.

Christianity gets through this by saying you will return to your prime. That just seems kind of childish to me though, like "yeah when you die you and all your friends and family are gonna be 25 and you live in paradise together forever".

How do you resolve the idea of an eternal consciousness with the very real and common occurence of people losing their consciousness while they are still alive?

If multiple people independently report the same experience (across time and space), isn't this actually evidence of objective reality rather than a refutation of it? It points to some underlying universal structure of our experience as constructed by our brains, which suggests that our brains are part of a mechanistic, external, and therefore objective reality instead of a subjective one (where our own ideas constitute reality).

> In particular, what was convincing to me, is how very very similar the cases are and that they happen to tribes living at a stone age technological level with no contact to Hollywood, and that there is a described case from Plato from over 2000 years ago that is identical to modern cases.

This sounds intriguing.

> Case in point, in NDEs there are a couple of common stages, and experiencers go through some or all of these, most often only some. One is traveling from the location of death to a heavenly realm. For westerners this often is flying through a star trek like hyperspace tunnel, while for stone age people they might be in a canoe that travels by itself to a distant island.

Ah, so the similarity is all enitrely in your interpretation of these clearly dissimilar visions.

Objective reality exists, but nobody can ever perceive it, at least not while they're perceiving things through the filter of their body

Here's Plato's thing, the "myth of Er":

https://en.wikipedia.org/wiki/Myth_of_Er

What are the unaccountably unlikely commonalities that I should be noticing? Between this and the article, I see only: some kind of colored light, some kind of officiating beings, and a river (A.J.Ayer says he presumably had the Styx in mind, though amusingly in the actual ancient Greek account it's a different river and there's no need to cross it).

Reminded me of this TED talk of a woman who had a stroke and told about the experience:

https://www.ted.com/talks/jill_bolte_taylor_my_stroke_of_ins...

> And I look down at my arm and I realize that I can no longer define the boundaries of my body. I can't define where I begin and where I end, because the atoms and the molecules of my arm blended with the atoms and molecules of the wall.

Why do those experiences indicate the presence or non-presence of an afterlife?

This claim from Ayer -- how do we make the leap from these experiences existing to being evidence of a life after consciousness?

> On the face of it, these experiences, on the assumption that the last one was veridical, are rather strong evidence that death does not put an end to consciousness

> the brain dumping DMT

Why do you exclude this hypothesis? It's well known that some drugs such as DMT do cause very similar hallucinations among people, even across cultures (as is the case with NDE).

There's this mushroom Lanmaoa asiatica that causes people to hallucinate hundreds of tiny people running around interacting with the environment. Consistently, across cultures and regions. You eat this mushroom and you're pretty likely to have a very similar hallucination to everybody else who eats this mushroom. Now is there some objective reality of hidden little elves everywhere that only this mushroom unlocks? Or is it a specific physical trigger that when people go through it they have the same sort of experience.

You can have the same question about the near death experiences. Are they experiences of an objective reality somewhere or is it a common physical situation triggering similar experiences across people and cultures.

Taking it to another level, there are several cases where people who weren't dying experienced the NDE (ex: Nurses, loved ones at someones bedside, etc). They actually witness what the dying person might have been experiencing when dying.

A materialist would argue that nothing you describe rules out malfunction in a brain failing rapidly due to oxygen starvation, and that the commonality of experiences is explicable in terms of common failure modes in effectively identical brain architecture. (Just about everyone's visual cortex works about the same, etc.)

I think it's cute how hardcore materialists believe it is even in theory possible to distinguish their position from ideological simulationism. Maybe in a thousand years. Not now. But phenomenology is the name of the philosophical discipline that you are now struggling to recapitulate.

Incredibly easy to explain this without trying hard. The subject has some sense of movement forwards, and the brain rationalises it, like we do in dreams, imagining a tunnel or a canoe or whatever familiar thing is associated with that feeling of drifting or flying. So we can conclude that maybe near death experiences cause a feeling of falling or drifting, and is a bit like dreaming - not that objective reality should be rejected.