What would constitute proof of a ghost?

Nope, Resume, just the 'discovery' of the formerly undiscovered of something that may have been suspected. It does happen. And just reading the NDE thread maybe we are now heading into the 'last frontier' ? (not space ;))

To me regardless of a definition , it seems pretty obvious what a 'ghost' is or includes!

My sentiments exactly. Wow this thread is interesting. Wish I had more time to talk, rather than just jump in.
 
I was watching a doco about the discovery of liquid water on Saturn's moon the other day, and therefore the likelihood of early life forms also. And how this should challenge the whole concept of life in the Universe. (based presumably on Religious teachings of creation.)

I was wondering if we will consider them (lifeforms) to be present based on likelihood, or actual hard proof in the form of samples from this moon.

I know this is science based. But not long ago UFO believers were considered idiots and woo's. I just feel the study of paranormal existance is a field apart, maybe in it's infant stages.

And before you leap on me with rational beliefs/known scientific studies in the paranormal etc, I have chosen to counterclaim with this site to how I feel (right or wrong ?...just different, and maybe leading to dogged determination in these fields also.)
http://www.victorzammit.com/skeptics/winston.html

Winston WU! Classic!
 
Believe it or not Resume, some of us choose to think along those lines. We also consider ourselves openminded and willing to be proven incorrect. Our juries are still out on a lot of issues.

I suppose though we do consider anecdotal evidence as valid in some instances. This no doubt is based on the fact we can't consider ALL instances of anecdotal evidence as false and lies.

So simply think until all of them are disproven logically, maybe there is something in some of them.

This may make us non critical thinkers or irrational , but as I have posted before, basically humans are all irrational thinkers. And does not make our opinion any less important to others either.

In the case of proof of the existance of a ghost.

I would say a lot of anecdotal evidence (repeatable), with multiple witnesses, and followed up by all non paranormal causes being discounted, as well as the accepted 'ghost hunting' devices giving suitable readings, that have also had non paranormal causes discounted. Would suggest further study be worthy.
 
Believe it or not Resume, some of us choose to think along those lines. We also consider ourselves openminded and willing to be proven incorrect. Our juries are still out on a lot of issues.

I suppose though we do consider anecdotal evidence as valid in some instances. This no doubt is based on the fact we can't consider ALL instances of anecdotal evidence as false and lies.

So simply think until all of them are disproven logically, maybe there is something in some of them.

This may make us non critical thinkers or irrational , but as I have posted before, basically humans are all irrational thinkers. And does not make our opinion any less important to others either.

In the case of proof of the existance of a ghost.

I would say a lot of anecdotal evidence (repeatable), with multiple witnesses, and followed up by all non paranormal causes being discounted, as well as the accepted 'ghost hunting' devices giving suitable readings, that have also had non paranormal causes discounted. Would suggest further study be worthy.

There is no such thing as the highlighted. Actually, I shouldn't put it that way. The highlighted, EMF meters for example, are devices people who call themselves "paranormal" investigators have co-opted; none of these were manufactured to find "ghosts." None of this stuff is calibrated, there are no controls, baselines . . . "Ghosts" leave cold spots some say, others claim hot spots. Elevated EMF readings are evidence of "ghosts" because . . ? Well because we say so, "ghosts" are "energy."

If you cannot understand why many find this uncompelling I don't know what to say.
 
Some liquid swords, some chambers, and some cash ruling everything around me.

Yes. :clap: And some killer bees.

we should be saving the gulf because.. the gulf is connected to everything.. the earth is alive..

No more Avatar for you.

Remember that we're talking about a paranormal claim here. Strictly, we know it doesn't exist anyway, but it isn't intellectually honest to just define it away. If someone can show us a human-like being that is material yet passes through walls, then it's existence is proven, whether it makes sense or not. It's unfair and unnecessary to look for a definition that completely explains the phenomenon. All that matters is whether or not the phenomenon exists.

Very well stated. I'm glad you said that. Joe seems to think that simply defining the word "ghost" would end the discussion. Because a ghost is a 4-sided triangle after all. All of the explanations so far have merely been trying to answer the OP question. Of course (to reiterate a point that has been driven into the ground), a clear definition is mandatory for debate. Many were offered. None were accepted. The conversation continued anyway. ;) Weird.
 
I would say a lot of anecdotal evidence (repeatable), with multiple witnesses, and followed up by all non paranormal causes being discounted, as well as the accepted 'ghost hunting' devices giving suitable readings, that have also had non paranormal causes discounted. Would suggest further study be worthy.

Can you give an example where the bolded above is true?
 
Okay so nothing will prove the existence of a ghost. Okay let's all get back to our lives now.

I don't see my OP as opening up a debate, per se. At least, that's not what my objective was. It is because it is so hard to define a ghost that we ca conclude they don't exist. No definition is available, for lack of a better term.

My question has been answered.

Go now in peace. Amen.
 
Firstly, I appologise for posting before I've read the whole thread - it makes me a bad person and I shall punish myself for it later.

But I once asked myself the same question and wrote a short story, designed to be, if you like, a skeptic's ghost tale. I'm not sure if it worked as a narrative, but the evidence required was basically a preponderance of data of all available types and a repeatable phenomenon. You have to be able to prove that the thing you're claiming as a ghost, or ghostly phenomenon, cannot be the result of serendipity or trickery.

Even then, I'm not 100% convinced that such a proof would be compelling; you would have to show that the likelyhood of the evidence generated being false (wether faked, or just misleading) was actually less that the likelyhood that ghosts exist. That can only be a subjective comparrisson, of course, and in that lies the problem.
 
I don't believe in them either...it seemed like a fun exercise to think on what I would need to start accepting them (or one) as real.

And a good ghost story is a wonderful thing!
 
I agree with mirrorglass, the definition of a ghost should come after proof of existence of a ghost, once every other non ghost cause has been ruled out.
How can you distinguish ghost and non-ghost causes if the term ghost is not defined?

ie if it is not of human origin then it is paranormal (call it a ghost or whatever).
The terms paranormal and ghost are not interchangeable. The question was not about how can you demonstrate that something paranormal is happening. The question was about what constitutes proof of a ghost.
 
Okay so nothing will prove the existence of a ghost.
If the definition of the term is self contradictory, then nothing can prove its existence because it is by definition impossible (like 4 sided triangles). This seems to be the case (see mirrorglass' efforts to do this).

If, however, you can come up with a valid definition that is not self-contradictory, then it would be abundantly clear what would constitute proof (even if it doesn't exist).
 
Joe seems to think that simply defining the word "ghost" would end the discussion.

A big surprise, MikeSun is wrong again. BTW, if you want to know what I "seem to think" you should read my posts. I've made it clear that defining the term ghost is necessary to answer the question the OP posed. That is, that's where the discussion must start.

Since no one has been able to come up with a formal logical definition or operational definition that isn't self-contradictory, I am of the opinion that the concept is like a 4 sided triangle. If you have a good definition, you could share it rather than mischaracterizing my posts. I suspect you do not.
 
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It really doesn't matter whether we know of such things existing or not. A material thing that can pass through a wall is not self-contradictory, and that was the point.
But your point falls short. A material thing the size and shape of a human that can pass through walls is self contradictory.

And you haven't given me any example of a thing that is sometimes invisible, sometimes solid, etc. These things are self contradictory.


All that matters is whether or not the phenomenon exists.
No. All that matters is whether a ghost exists. Some unexplained phenomenon is not necessarily a ghost.



Which is why I avoided using the word 'walk' in my post. At no point was it stated that ghosts interact with floors any more than they do with walls. That's just the movie "Ghost".
You're kidding, right? You want examples of purported ghosts that were said to walk, to make sound, to be photographed, etc.? All of these things are logically inconsistent with passing through a wall.



Yes, information from a passed on person wouldn't really work. But we could have the person conducting the test write a number on a piece of paper, placing it in a place where no other human could read it. If the apparition then gave the correct number, that would be pretty strong evidence that it indeed is a 'ghost'.
Again, not without defining the term. (By the way, how does writing it down make the problem of information leakage go away?) Why couldn't the result be due to telepathy? Are you defining ghosts as being telepathic, but no human can have that ability?



Well, if a phenomenon is observed, and the possibility of fakery is eliminated, then the phenomenon is proven.
If by "phenomenon" you mean something that is observed, then yes, but that's a tautology. One can also be self deceived (with no trickery involved), as for example optical illusions, pareidolia, etc. So elminating fakery doesn't prove anything except no fakery.

[ETA: I could add faulty memory, delusions, hallucinations, etc., but I was thinking primarily of self-deception along the lines of the Clever Hans story. There was no trickery and people observed the "phenomenon" of a horse apparently doing arithmetic. It turned out that the horse was not doing arithmetic. I think many ghost hunters deceive themselves.]

And the definition we were using here is "a human-like being, or the visible energetic projection of such a being, which does not appear to have a solid material existence which can be detected" (snipped a bit of unnecessary detail; also, "does not appear to have a solid material existence" should probably just be taken to mean "floats around, occasionally becomes invisible and/or passes through walls"). Basically, seeing a ghostly apparition and ruling out fakery satisfies the conditions.
And such a definition is logically inconsistent. If it can be detected, can produce sounds, is human-like and at least sometimes visible, then it can't possibly "not appear to have a solid material existence". These concepts are logically inconsistent.

Also a thing can not be visible and invisible, or audible only to some people. (That's not how light and sound work.) As for floating around, that by itself would not be sufficient to distinguish a ghost from an otherwise normal human with the ability to levitate.

And yes, I realize that isn't what is commonly referred to as a ghost, at least in myths.
This was more in response to those who refuse to attempt what you're attempting: that is, offer a formal definition of the term ghost. They said that everyone knows what ghost means and we should just go with the conventional usage. I'm pointing out that that conventional usage is also logically inconsistent.
 
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Just to underscore another point I've been making: if the term is defined (and not self-contradictory) we can answer the OP's question even if the thing doesn't exist. I don't believe Bigfoot exists, but if we define it as a hitherto unknown species of great ape indigenous to North America, we can easily say what would constitute proof of its existence. (For example, DNA evidence.)
 
Your point about the requirement for a definition is perfectly valid, of course. It's one the I didn't deal with in fiction, if only because the notion of an encompasing definition is quite opposed to the frisson of a horror story. Answers are rarely as scary as questions!

That's where real life falls flat, of course - proper investigation of anything, for all that it can be beautiful, fascinating, elegant and engrossing, would rarely make a good episode of The Scary Door.
 
I agree with mirrorglass, the definition of a ghost should come after proof of existence of a ghost, once every other non ghost cause has been ruled out.

ie if it is not of human origin then it is paranormal (call it a ghost or whatever).

I always chuckle at threads that get stalled on definitions. It's let's argue the words and not the statement/question.

Definitions are quite important in discussion. Especially in a case like this, where there was no actual statement, but just a question, and the question turned out to be inadequately defined. Answering the question required defining the term 'ghost', and we've yet to reach a consensus on that.


And am very surprised this has not already been decided (definition of ghost) on a thread for sceptics. How can you say those with 'ghost evidence' are wrong if you have not decided what they are wrong about.

You're looking at this backwards. It's not up to the skeptic to prove something doesn't exist, especially if we don't know what that something is. If you claim a ghost exists, then you must give an adequate definition of 'ghost' in order for your claim to be falsifiable. We don't decide what those with 'ghost evidence' are talking about. The problem is, those people usually don't either, which is why their claims are impossible to investigate.

But I do also realise the fact sceptics do not believe in the possibility of ghosts means defining what one is (when it does not exist) is confusing, and possibly unanswerable....because to answer it is to admit it exists.

Not at all. I can easily offer you any number of definition of a ghost, a dragon, a grue or a skewsaddach, and that won't mean any of those things exist. The trouble is, the people who actually believe in these things won't accept my definitions.

The definition of 'ghost' I go by is 'an apparition, often human-like, that is considered supernatural by the viewer due to confusion, illusion or other mistake'. Obviously a believer won't like that. Another definition I've discussed above. However, that definition demands that the 'ghost' cannot be explained by any fakery or illusion. Most believers don't accept this definition, either, mostly because ghosts only seem to appear in environments where trickery and illusion are quite possible.

On top of that, many believers insist on claiming a ghost is 'the soul of a deceased', 'residue life energy' or such like, and invariably fail to offer consistent definitions of 'soul' or 'life energy', making their definitions meaningless.

I am actually reminded of the discovery of TB http://nobelprize.org/educational_games/medicine/tuberculosis/readmore.html

It was suspected a bacterium may be responsible for the disease, but the bacteria could never be seen in standard microbiology practices. Once a method of viewing it was found the bacterium was named and defined. And regarded as a great discovery.

Certainly it's within the realm of possibility that ghost could one day be found. However, there's a decisive difference between the idea of ghosts and the idea of M.tuberculosis: the latter actually explains a detectable phenomenon. Ghosts don't offer an explanation for anything but themselves, and despite attempts, no one has been able to show the whole phenomenon is more than illusion and fakery. That's why claims of ghosts are fare less believable than claims of new, smaller bacteria.

Believe it or not Resume, some of us choose to think along those lines. We also consider ourselves openminded and willing to be proven incorrect. Our juries are still out on a lot of issues.

I suppose though we do consider anecdotal evidence as valid in some instances. This no doubt is based on the fact we can't consider ALL instances of anecdotal evidence as false and lies.

So simply think until all of them are disproven logically, maybe there is something in some of them.

This may make us non critical thinkers or irrational , but as I have posted before, basically humans are all irrational thinkers. And does not make our opinion any less important to others either.

In the case of proof of the existance of a ghost.

You misunderstand what critical thinking means. People here don't consider anecdotal evidence valid in most debates, sure. But that doesn't mean we systematically disbelieve all anecdotal claims - we simply hold the default state of not believing a claim, such as ghosts, until proper evidence is shown.

We don't deny that there is plenty of evidence for ghost sightings. However, the logical thing to do is assume those sightings are due to known, natural causes, such as fakery and human error - both very common and well understood, especially since many, many sightings have been shown to be false, yet no investigation has ever yielded proof of anything 'supernatural'.

So yes, there is something to all the sightings. But until someone can show that something is supernatural, we'll just assume it isn't.

I would say a lot of anecdotal evidence (repeatable), with multiple witnesses, and followed up by all non paranormal causes being discounted, as well as the accepted 'ghost hunting' devices giving suitable readings, that have also had non paranormal causes discounted. Would suggest further study be worthy.

With the exception of the devices - there's no such thing as an 'accepted' ghost hunting device - yes, such a discovery would be quite marvelous. But the point is, evidence such as you describe has never been reliably presented.


Okay so nothing will prove the existence of a ghost. Okay let's all get back to our lives now.

I don't see my OP as opening up a debate, per se. At least, that's not what my objective was. It is because it is so hard to define a ghost that we ca conclude they don't exist. No definition is available, for lack of a better term.

My question has been answered.

Go now in peace. Amen.

Sweetie, a thread is like a baby bird. You can't own it, you just start it off and let if free. After that it will fly where it wills. If your question was answered, you have no obligation to keep posting here, but the conversation will continue as long as there are two people who hate each other disagree. So don't worry about it, the thread will die when it's time has come. ;)
 
SNIP: General reason and rightness

...the thread will die when it's time has come. ;)

...Or if something terrible happens and it dies in tortured agony, it may forever more wander the halls of Abandon All Hope House, out on the wind-swept moor. The town's folk don't go out that far. Not after dark.
 
If Houdini appeared to James Randi and exposed a secret that only Houdini could have known, I would give the thought of ghost another critical look. That would be a good start point though.
 
I'm pointing out that that conventional usage is also logically inconsistent.

So by definition we can't define what a ghost is, because a ghost is logically inconsistent.

A bird can't live underwater, but some birds can swim. A fish can't glide for hours on thermals, but some fish can fly (a bit). They're all classed as living animals, though; just because we can't find one single organism that can both live underwater and take to the wing doesn't mean the other types can't exist. I don't particularly see why you shouldn't have different types of ghosts. And I also don't see why they should be expected to conform to all normal expections of behaviour either, since by their nature they'd be pretty abnormal things.

Furthermore, I think that arguing "a ghost is logically impossible therefore we can't specify what would convince us as a ghost" is especially satisfying. Surely there must be something that would be utterly convincing?

If Houdini appeared to James Randi and exposed a secret that only Houdini could have known, I would give the thought of ghost another critical look. That would be a good start point though.


Something like that, maybe... mind you I might suspect him of being up to something all the same; he's a trickery fellow ;)
 

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