turtle said:Isn't that proving a negative?
Not at all.
First, science is ALWAYS provisional.I can't show how science is wrong -- that doesn't mean they're right, always. In context of the paranormal.
Second, you certainly CAN show that some part of science is wrong, ALL you have to do is provide hard evidence that contradicts part of science.
That is all, repeat ALL you have to do. There is no argument to enumeration, exclusion, etc, going on here. All you have to do is show something that contradicts science and have HARD EVIDENCE.
An absurd statement.I've seen ghosts -- prove me wrong! You have no way of knowing.
I will accept, 100%, that you believe that you have seen ghosts.
However, having studied human perception for going on 30 years or so, I am quite comfortable in saying that what you sincerely believe you saw is no evidence at all.
Hard evidence means that you have to be able to show others ghosts, in a form that is testable, verifiable, and reproducible.
In other words, you have to provide good evidence that it's a ghost, not something else, that there was anything happening, and you have to be able to repeat this, and OTHERS have to be able to repeat this with or without you, as well.
Then of course we can argue about what is "hard" evidence, and from what I've seen around here, no amount is ever satisfactory. Oh well. . .
Hard evidence can be tested, etc. The theory behind the evidence has to be falsifiable, testable, verifiable, repeatable, etc.
"I saw a ghost" is not even evidence, let alone hard evidence. If I presume that you are exactly, precisely sincere, and that furthermore you are a sane, competent adult human being, that STILL is not evidence. If it's something you can repeat at will with others, do so, and start working on how to verify this under controlled, verifiable conditions.
Anecdotes present a problem when they can not be confirmed. For instance, a known provacateur accused me of lying when I said that my mom had a major argument with a person "assisting" her in filling out her absentee ballot. The provacteur claimed this was not evidence. The provacateur did not account for the fact that there were other witnesses, and that many people's perceptions could be brought to bear on my statement. Still, this is not hard evidence, even though many people saw, etc, the event. A recording would have been much better evidence. On the other hand, we can corroborate this with the experiences of others, who can relate the same tale. So there is still some level of verification. So this is something for which there is some evidence, even though the provacateur chose not to examine the evidence and, rather, persisted in making defamatory accusations. There are many, rather than one, people who share the experience, and both they and eyewitnesses can tell tales that share the features under discussion. Now, of course, there is nothing extraordinary about this claim, either, it involves simple, well-known human behaviors.
When we get to extraordinary claims, the leve of evidence cited above would simply be cause to investigate further.
On the other hand, "I saw a ghost once" is not verifiable, it is not repeatable, etc. It is not evidence at all. I will presume that you are saying exactly what you believe, this is not a question of veracity. I will furthermore not assume that you are hallucinating or something like that. I will simply point out that human perception is hideously, terribly fallable, and that single instances that can not be reproduced have no value in science. In my own area, I have often created "illusions" of whole sound, in fact, MP3 (something I'm one of the lead researchers and main inventors of) works by discarding what we can't hear from a signal (when it works right, that is). You can easily argue that the result is an "illusion" of the whole, even though it's generally quite convincing and so on. Just something like that, where 90% of the information in the signal is removed outright, shows how tricky human perception is.