A friend and I are arguing over ghosts.
I think it’s akin to astrology, homeopathy and palm reading. He says there’s “convincing “ evidence for its existence. He also took up company time to make a meme to illustrate our relative positions. (See image)
(To be fair, I’m also on the clock right now)
What do you think?


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That’s essentially a “god of the gaps” argument, i.e. if we cannot demonstrate it scientifically, therefore it must be God, or ghosts, or the Great Bacterial Collective Intelligence. But, in any case, turn that question around: do we have good reason to scientifically exclude the possibility of ghosts? And the answer there is a very strong ‘yes’.
Ryan North has a lot of Dinosaur Comics exploring concepts around ghosts, but the one that sticks in my mind is the one in which T-Rex muses about finding out what makes a poltergeist angry, triggering its ire constantly, and connecting the object(s) it manipulates to a generator in order to get infinite free energy.
Because, the physical world that we know and inhabit works on energy. For a ghost to interact with our world, it would simply have to inject energy into it. Sound, light, heat, et cetera, it’s energy. There’s no way around it. And we have laws of physics, like conservation of energy, which we very, very, very thoroughly tested at the scale, energy level, and relativistic velocities (that is, our human environment) at which ghosts would interact. In our natural world, we’d have to see macroscopic effects without causes, and energy entering or leaving the system. We’d be able to measure it, but we have not. E = mv2, and the two sides of the equation balance, always.
More prosaically, another Dinosaur Comics strip posits that ghosts must be blind because they’re invisible. Invisibility means that all light passes through them, but if it doesn’t strike whatever ghosts use for photoreceptors, they’d by needs be blind. If their eyes did intercept light so that they were able to see, then if a ghost was watching you in a bright room, you’d at least see the faint shadows of its retinas. (Creepy!) In short, we don’t have to make any claims about the supernatural to say that if ghosts, or other supernatural phenomenon, interact with our natural world, we’d have to be able to see and measure the effect beyond subjective reports. However, we don’t, and there really just aren’t any gaps in the physics for ghosts to reside in.
As for the book, well, we all live inside these meat-based processors that are not exactly reliable in interpreting sensory input, or making narrative sense of it, and are well-known to just fabricate experiences and memories out of the ether when the sensory input is absent, scrambled, or just not interesting enough. It seems to me that the strongest likelihood is that brains did what brains habitually do (i.e. come up with fantastical stories), and that our theory of physics is pretty decent, since it has enabled us to create all sorts of technology.
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With all due respect, you’ve latched onto 1. my introductory literary device for framing the argument, and 2. where I dismiss the book based on my argument, but missed my argument, which I would succinctly state as: By definition, we don’t know anything about the supernatural, but we know the natural world extremely well, and we can explain the way that it behaves fully and completely without supernatural influence. Not only do we lack evidence of the supernatural, the evidence that we do have rules it out.
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If a book claims something that’s fundamentally impossible by the laws of physics, I don’t need to read it to dismiss it.
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Does the book posit new laws of physics, or even call into question the current set? That’s what Gallileo did, but the promotional copy for the book doesn’t suggest that it does.
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You seem like an extremely gullible person.
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To fantasy creatures? Yes, I am close minded towards things that cannot be proven or disproven because they don’t exist in the first place.
What a ridiculous hill you’ve chosen.
You are an unserious person.
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This is absolutely something you could scientifically test.
The scientific method is building up knowledge by noticing a pattern, coming up with an explanation for that pattern, then thinking what further effects that explanation would imply, and looking for those effects.
So when someone claims something is “outside the realm of science”, how could that be?
Often it’s either because it isn’t reproducible (it’s a miracle that supposedly happened once and never will happen again) or it doesn’t affect anything.
If it isn’t reproducible, it’s hard to believe that it happened that way. Perhaps you are missing some details?
If it doesn’t affect anything, why care?
I’ve heard of many, many attempts to scientifically prove supernatural effects and none that showed a result. Most ghost stories I’ve heard have other more reasonable explanations if you think about it. Memory tends to be unreliable so sometimes details may be added or changed to fit the expected explanation, even if the person doesn’t intend to be misleading. Of course, sometimes people do exaggerate or make things up deliberately.
Nevertheless, if you have some decent examples of actual evidence of ghosts, I’m genuinely curious.
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I’m not really sure why you chose to reply to me, as opposed to anyone else who replied on this thread. You can believe whatever you want.
There’s no evidence that ghosts exist. Yes, there are many unexplained things. Yes, existence of ghosts is not impossible. But without evidence, it’s impossible to argue for something.
I’m not going to tell you that you shouldn’t believe in it. I’m just going to tell you that I won’t.
Debunking: https://psychologycorner.com/skeptics-review-surviving-death-2021-netflix-original-series-movie-analysis/
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I know, but seeing as most of the content comes from the book…
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What was it that convinced you?
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Near death experiences are a tricky thing to study. There are physiological explanations for much of it, such as weird brain activity is likely to be interpreted as a weird experience.
The problem of this argument is confirmation bias. An anecdote of seeing information you couldn’t have seen and being right is going to be more memorable than seeing information and being wrong.
The scientific method involves looking at both the cases where it seems like something happened and the cases where nothing happened (e.g. someone said they had an experience but it clearly didn’t match reality). If you cherry pick just the events that “showed” what you want, that’s confirmation bias.
I did some googling of my own and found some studies on the topic from seemingly reputable sources that suggested physiological explanations might not be sufficient to explain the patterns they saw. Several of these had the same first author. I also found plenty of studies suggesting physiological explanations can be sufficient, as well as some specific criticisms of the couple studies that suggested they weren’t sufficient.
It’s interesting for sure that there is a doctor or two who seem to believe in the supernatural. The topic of near death experience seems to be of research interest regardless of any supernatural theories because of what it tells us about the brain.
It seems we will likely arrive at scientific consensus about near death experience in the future. I wouldn’t hold my breath that supernatural theories will survive that process.
I think I saw the case this was talking about during my googling. It said “brain activity was not expected” which is not the same as “there was no brain activity”.
That’s the problem with a book like the one you are describing. It’s deliberately cherry picked, exaggerated, and biased to drive you to a certain conclusion.
I instead urge you to go read scientific papers on the topic, and specifically not just the ones that seem to suggest the outcome you want to hear.
Here’s a place to start.
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Confirmation bias is when the outcome could be adequately explained by luck.
In the topic of near death experiences, if there are 1,000,000 near death experiences and 100 involve someone “knowing something they shouldn’t be able to”, those 100 cases are more likely to be remembered or recorded as significant than the other 900,000 cases. This can lead to an apparent statistical significance in correctly knowing “unknowable” information, when really it’s just people “guessing” correctly.
The “black swan” scenario is a bit different but it would be something like if you are more likely to record a swan sighting if the swan is black, you will significantly overestimate the frequency of black swans.
Im not saying the cases of apparent supernatural effects should be ignored, I’m saying they need to be taken in the context of all similar events, including the mundane, to understand if there even is an effect (knowing something that shouldn’t be possible) or if it’s just a handful of lucky guesses.
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That’s a number I threw out there to estimate how many near death experiences might have happened, studied or not, and that’s why it’s such a problem to only focus on the anecdotal cases that get recorded because they are interesting.
A proper study doesn’t need to include 1,000,000 cases, but it does need to ensure that it doesn’t have bias in the cases it does include.
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This can be verified by asking people who have had near-death experiences whether or not they experienced something correct in their near-death experiences. Obviously, such experiences are traumatic, and multiple studies show that people can hallucinate due to the release of various neurotransmitters associated with the same.
We want to calculate the probability that someone manifested as a ghost given that they had an interesting near-death experience. We assume that anyone having a true supernatural experience experiences visions that are absolutely true. For each person, there are two possibilities (we’ll calculate the probability of each later).
The first possibility is that a person, in fact, experienced hallucinations. The second possibility is that a person experienced a ghostly manifestation.
Now, we further give people an objective multiple-choice quiz about the positions of various objects in an environment. To generate this quiz, we ask each person to choose the environment they believe themselves to have manifested in. We verify that they have never been to this environment before and did not have any method of knowing about this environment (e.g., if a subject saw a person going into a room and later gave an exact description of the person in the given room, it will be disregarded). We only test people who believe that they experienced a supernatural event. All options are framed in an equivalent manner and are presented in a randomized order to remove cognitive biases and implement double-blind protocols. We further use questions with non-obvious answers such that they differ from previous implementations (e.g., a vision of a surgery table with an overhead light is obvious, and by itself, not indicative of supernatural phenomena).
If the subject hallucinated, we assume that they have a random chance of predicting the positions of various objects. We now repeat this quiz a large number of times in accordance with the law of large numbers. If, after many repetitions, we find a sufficient deviation from the expected result (e.g., if each question had one correct answer and three incorrect answers, with the observed rate of correct answers being 50% instead of 25%), then we would have evidence supporting the existence of ghosts.
If, however, the results show no sufficient deviation from the expected results, then we would find that the probability of a perceived encounter being supernatural is approximately zero.
In this way, we can use scientific methods to test claims of ghost-like phenomena.
NOTE: If we only focus on the 25% of the cases as mentioned in the above example, we find that we are not focusing on the remaining 75% of the cases. Presenting only 25% of the cases, without giving any thought to the remaining 75% of the cases is an incorrect method of analysis as explained above.
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Thanks for explaining. To be honest I’m still not sure why that convinced you. If you wrote a book with a few hundred, even a few thousand anecdotes about people levitating I would still believe in gravity.
That is the part I doubt the most. Because if that was true, if this so called credible science in your book wasn’t misinterpreted or simply faked, the scientists responsible would have gotten a nobel price and world wide recognition. But they didn’t. If ghosts (or near death experiences, for that matter) were measurable in a repeatable or otherwise credible way it would be done on a wide scale. Scientists basically live for the chance to be the one who challenges a paradigm - and this one would shake everything we know about the material world, every scientific discipline, religions even.
There’s simply no good reason for such “credible science” to go unnoticed. There is at least one very good reason for faking it: It makes money.
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Physics can explain helium balloons really well. There’s no mystery here. And they’re certainly not disproving gravity.
Einstein had no easily repeated experiments to show off. You’re claiming ghosts are measurable in a repeatable way - simple enough to be explained in a book for laypeople . At least after the third or fourth study with robust methodology the scientific community would be talking about nothing else. And I know that because I am surrounded by the kind of researchers you’re thinking of when you say “scientists”. They’re a bunch of nerds, they love that stuff. And they research ominous stuff all the time, a biology professor here spent 3 years studying healing crystals in drinking water. Disappointingly they found nothing.
Well to be fair we’re talking about a claim that such research exist, which is miles off from discussing actual research, which would be done by scientists in order to validate it’s operationalisation and discuss their findings.
The thing is: extraordinary claims require extraordinary evidence. A book simply isn’t that. It’s way too easily faked, isn’t subject to the scientific method, peer review, any form of control or critical oversight and at the end of the day profits not from the truth but from being sold. And you are here doing advertising for them, so it seems like they are succeeding at that.
I’m not trying to persuade you. I believe that would be hard to do at this point. What I’m trying to say here, referring to the thread and OP’s question: It’s not unreasonable to think that you, and everyone else being convinced by a very entertaining and captivating book outside of the actual scientific method, are unreasonable.
One book simply shouldn’t be this convincing.
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Out of curiosity I just checked if I could find it. I couldn’t, which isn’t surprising - a book isn’t a scientific publication, so sources are rarely of great interest.
But in general: It would take hours, maybe days of work to cross reference the sources of a whole book with what the author claims they prove. Obviously I won’t do that. How many papers from the bibliography have you read? If you own the book, at least you should have easy access to it’s sources.
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Dude…no one fact checks those books and bullshit sells.
No one buys a book that says nothing happens when you die.
No one comes back from clinical death unless the medical staff fucked up.