SteveGrenard
Philosopher
- Joined
- Oct 6, 2002
- Messages
- 5,528
Still photo referenced above:
JPEG is "lossy," meaning that the decompressed image isn't quite the same as
the one you started with. (There are lossless image compression algorithms,
but JPEG achieves much greater compression than is possible with lossless
methods.) JPEG is designed to exploit known limitations of the human eye,
notably the fact that small color changes are perceived less accurately than
small changes in brightness. Thus, JPEG is intended for compressing images
that will be looked at by humans. If you plan to machine-analyze your
images, the small errors introduced by JPEG may be a problem for you, even
if they are invisible to the eye.
A useful property of JPEG is that the degree of lossiness can be varied by
adjusting compression parameters. This means that the image maker can trade
off file size against output image quality. You can make *extremely* small
files if you don't mind poor quality; this is useful for applications such
as indexing image archives. Conversely, if you aren't happy with the output
quality at the default compression setting, you can jack up the quality
until you are satisfied, and accept lesser compression.
Ohrryp said:=======
Is it a ghost? No. Is it something supernatural? No. It's a living person in a costume. How do I know this? It's really quite simple. Please examine the pthograph carefully. The figure moves into view from shadow into light; the amount of light on the figure increases as it moves into the open doorway, and lessens as it closes the doors.
Furthermore, there are points at which the figure casts a shadow -- a faint, small shadow, but a shadow nonetheless.
The fact that this figure reflects light and cast shadows should indicate to any reasonable person that this is a living, material person.
Ghost apologists may wish to cite various speculative hypotheses about how ghosts can violate the laws of physics at will -- making ghosts pretty damned powerful
-- but unless they can show some convincing science to support such hypotheses they will not be taken seriously.
Interesting Ian said:Is there anyone on here who doesn't agree with you? Or are you just saying this just in case any of us have any wavering doubts?
I wasn't writing about living human beings; I was writing about ghosts, which presumably are immaterial, or possibly semi-material (ectoplasmic), or extra-dimensional, and was writing about possible speculative hypotheses someone who believed in ghosts might advance.
That certainly doesn't follow. For example, if we assume we have free will ie our voluntary bodily movements do not wholly follow some predetermined algorithm and hence our bodily movements do not completely follow physical laws, it certainly doesn't follow we are d*mned powerful.
How can science support the existence of that which is not physical?
Interesting Ian said:
Yes, but there's no need to go to the other extreme either. Clearly this very physical "ghost" discussed in this thread is a very obvious hoax, but does that mean that all ghosts/apparitions are wholly internally generated ie a hallucination? Certainly not necessarily. Be sceptical, but not skeptical.
Has anyone asked Lyndale (LightPiercingDarkness) if he can see his demon faces in this?JPEG is "lossy," meaning that the decompressed image isn't quite the same as the one you started with.
Mona said:
There is no more evidence for these ghosts, apparitions, ESP, or whatever, than there is for the Virgin appearing at Fatima-- that latter notion had me in thralldom for my entire youth. Truly, as grumpy and egotistical as Randi is, he was a factor in freeing me from religious shackles. Why, then, should I not apply empricism and reason to all other extraordinary claims? Give me compelling evidence, and I'll believe. Don't, and I won't. What is so wrong with that standard? I can tell you what is right with it, in terms of freeing minds, because I lived that liberation.
Truth matters. To real people.
Interesting Ian said:
Let's take one particular example. About half of all widows and widowers at some stage report hallucinatory experiences of their dead spouses in a clearly waking state. With what reason do you believe their experiences are not what they seem to be?
Ed said:[Originally posted by Interesting Ian
Let's take one particular example. About half of all widows and widowers at some stage report hallucinatory experiences of their dead spouses in a clearly waking state. With what reason do you believe their experiences are not what they seem to be?
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Reference? [/B]
Interesting Ian said:
Are you unable to find your own references? If you doubt it what percentage do you think it is?
Ed said:
It sounds like hogwash to me. I also sounds like a typical fast and loose paranormal assertion.
The point is, if you can't back up a statistic, don't post it. Or, post it and let it rise and fall on it's merits.
Interesting Ian said:Let's take one particular example. About half of all widows and widowers at some stage report hallucinatory experiences of their dead spouses in a clearly waking state. With what reason do you believe their experiences are not what they seem to be?
An hallucination is an experience of perception in the absence of an appropriate stimulus, but which has the impact of a conventional perception and is not under the control of the experiencer.
http://watarts.uwaterloo.ca/~acheyne/S_P2.html#hall
Interesting Ian said:
What evidence do you have that I can't back up my statistic? Oh yes, and it needs to be peer reviewed.![]()
Flaherty said:
Originally posted by Interesting Ian
Let's take one particular example. About half of all widows and widowers at some stage report hallucinatory experiences of their dead spouses in a clearly waking state. With what reason do you believe their experiences are not what they seem to be?
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By definition, a hallucination is generated entirely from within the mind. Ergo, the experience is not a ghost.
quote:
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An hallucination is an experience of perception in the absence of an appropriate stimulus, but which has the impact of a conventional perception and is not under the control of the experiencer.
http://watarts.uwaterloo.ca/~acheyne/S_P2.html#hall
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Everyone experiences hallucinations from time to time
Suezoled said:I don't read Ian's posts often, but the ones I do read are hilarious.
1.) "I assert that 99% of cats have all their claws fall out at one point in their life" (just a silly example)
2.) "Prove it" (skeptic of your choice here)
3.) "What is evidence? What is proof? Can't you look it up yourself?" (Ian)
4.)"Since you're not bringing up proof but you like to talk a lot, I'm thinking you don't have any" (skeptic of your choice here)
5.)"Who says I don't have proof?" (Ian)
6.)"Where is it?" (skeptic of your choice here)
7.) "Oh well what you have to say doesn't count for the immaterialist viewpoint"
Bing! Verse 543908 same as the first.
Or, as I have admitted I don't read Ian's posts very often, is this not a correct evaluation of the situation?
Ed said:
Never said that, I just said it sounded like hogwash. Unfortunately, believers in the paranormal are like believers everywhere, the results are in and the data then is adjusted. It is intellectually dishonest, to say the least. So, by your non-response, I take it that you simply made up "50%" for the sake of theater?
So then, to answer for Mona
Question
"Let's take one particular example. About half of all widows and widowers at some stage report hallucinatory experiences of their dead spouses in a clearly waking state. With what reason do you believe their experiences are not what they seem to be?"
Answer
That is a non-question because you lied about the data.
Edit to fix my "answer"
Interesting Ian said:
Sorry, that was an error on my part. I shouldn't have included the word "hallucinatory" as that begs the question.
Hi Ed,Posted by Ed
The point is, if you can't back up a statistic, don't post it. Or, post it and let it rise and fall on it's merits.