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12-31-2002, 02:49 PM | #1 |
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Aerospace engineer's examination of the ossuary
Starting a new thread to keep things clear.
Layman The only recent development I see referenced here is the "study" by an aircraft engineer who does some archeological work, but in the field of metallurgy. Sauron: Your sarcasm is noted. However, the aircraft engineer does not pose as a professional archaeologist, and it's clear from the articles that he's approaching this from a standpoint of physical sciences. Noting the timing and placement of scratches is a perfectly valid way to evaluate a historical claim, since such artifacts are still subject to physical laws: http://www.nytimes.com/2002/12/03/s...ial/03JAME.html Dr. Daniel Eylon, an Israeli engineering professor at the University of Dayton in Ohio, approached the problem from his experience in failure analysis investigations for the aerospace industry. Applying a technique used in determining if a malfunction of an airplane part occurred before or after an accident, he examined photographs of the inscription for scratches caused by moving the box against other boxes in the cave or in the final excavation. "The inscription would be underneath these scratches if it had been on the box at the time of burial, but the majority of this inscription is on top of the scratches," Dr. Eylon said. "And the sharpness of some of the letters doesn't look right — sharp edges do not last 2,000 years." And again: http://www.activedayton.com/ddn/loc.../1203jesus.html Eylon's interest in the matter is far afield from his primary expertise of failure analysis (such as metal fatigue in airplanes). But he also does scholarly archeological work in Israel, his homeland. He analyzes metallurgical technology (whether iron artifacts were forged or cast). Eylon is the only scholar who has contested the ossuary's authenticity from a physical science perspective. But many others have noted the inscription's two styles. The first part, about James, son of Joseph, seemed to be written in a formal script, while the second, about Jesus, is in a more free-flowing cursive style. ''The fact that the cursive and the formal types of letters appear in the two parts of the inscription suggests to me at least the possibility of a second hand,'' said P. Kyle McCarter Jr., a specialist in Middle East languages at Johns Hopkins University. You indicated that you were treating this with skepticism. Do you have any reason to believe that the principle of investigation that Eylon employed here (usually conducted on metal objects) would suddenly be invalid when conducted on stone objects? If yes, then please elucidate on these reasons. If no, then given no a priori reason to reject his research, how do you justify your position of initial skepticism to his results? Upon what are you basing that skepticism, then, other than personal bias? It would seem more appropriate to hold a position of initial cautious acceptance of those results (pending any further developments, of course). |
12-31-2002, 03:01 PM | #2 | ||||
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Re: Aerospace engineer's examination of the ossuary
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1. He has no experience with these artifacts. 2. The IGS study of Patina suggests that the ossuary and inscription are in fact 2000 years old. You, of course, failed to provide the second part of my skepticism. But even as your own cite shows, he is the ONLY one to step forward with any sort of phyisical sciences objections to the Ossuary. Quote:
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But again, I am curious. Why do you cite the issue of the handwriting? How is that related to the aircraft engineer's report? It was my impression that he was suggesting that the entire inscription was a fake. Is he only claiming that part of it is? Or is this another one of those issues you are going to start yet another new thread on? |
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12-31-2002, 03:06 PM | #3 |
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2. The IGS study of Patina suggests that the ossuary and inscription are in fact 2000 years old.
Lupia raised issues with the patination study earlier. His observation was that the IGS study did not look at the patination a decisive way. I can't find the original posts. Vorkosigan |
12-31-2002, 03:33 PM | #4 | ||||||||
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Re: Re: Aerospace engineer's examination of the ossuary
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In addition, his bona fides appear intact: Daniel Eylon, professor and director of graduate materials engineering and an Israeli native with a fluent knowledge of Hebrew and Aramaic, says only one of the words, maybe even just a letter, of the inscription looks authentic. "For one, this is a 2,000-year-old artifact, but the majority of the inscription is very sharp and fresh. Look at any tombstone over 100 years old, and the letters are the first things to go," said Eylon. In Eylon's failure analysis work, he determines if a malfunction has occurred before or after an accident. Because of his years of experience, he felt so strongly that the inscription might be a fake, he has written to the Biblical Archaeology Review, which first published the finding, offering to perform a detailed analysis at any lab of the author's choice. He says there are several clues in the pictures that have been released that may dismiss the inscription's authenticity. Quote:
http://www.aviationexperts.org/burialbox.html the patina, or tarnish, which would normally be present on such an ancient artifact, is missing from most of the inscription. So both the IGS and Eylon could be correct here. Quote:
The simple fact is that Eylon is the only one to have bothered taken this novel approach to examining the ossuary. Quote:
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12-31-2002, 03:55 PM | #5 | |||||||||
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Re: Re: Re: Aerospace engineer's examination of the ossuary
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I think that's a fair request. Why you did not do so in this case only you really know. Quote:
I do assume there are differences in how stone and metal are evaulated, age, are inscribed, etc. Those differences mean that I am going to have initial skepticism about a claim that an expertise on one is fully transferable to the other. My assumption may be wrong, but you have not shown it to be so. Quote:
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Since they have expertise in this area and Eylon does not, I'm still skeptical of his claims. Quote:
Eylon is the only one claiming that there is a physical basis to suggest forgery. The IGS felt the opposite after their evaluation. I would hope that future study by more experts would give us more information. If they feel that Eylon has made a worthwhile argument, they may address it. But they may be satisfied by their own study and his lack of expertise that his point is not really worthy of a substantive response. I would not blame them. Quote:
Of course, there is also the evidence from the style of the inscription itself. Lemaire and Fitzymer are leaders in this field. Quote:
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His analysis does not support the idea that the first half is authentic and the second half forged or added in another hand. Quote:
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12-31-2002, 04:35 PM | #6 | ||||||||||||
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Re: Re: Re: Re: Aerospace engineer's examination of the ossuary
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We have a PhD in physical sciences who does not think that any such differences exist, or else he would not have bothered to conduct such a test, or submit it to BAR. Do you have anything - anything at all - to suggest that stone behaves differently than metal, when subjected to such analysis? If so, bring it forth. Quote:
"This box has several service-related scratches, the result of moving the box against other boxes on the cave shelves, impact with collapsed cave roof material or the final excavation," Eylon said. "The inscription would be underneath these scratches if it had been on the box at the time of burial, but the majority of this inscription is on top of the scratches." There is nothing unique about the ossuary, that would make his analysis invalid. If you think some point of uniqueness has been overlooked, then by all means bring it forth. Quote:
What is irrelevant is the fact that the patina was found to be consistent with a 1st century date. The reason that it is irrelevant is that the area Eylon identified has no patina on it. You cannot use the IGS dating of the patina to apply to an area that is devoid of patina. Quote:
1. The IGS did not conclude that the patina indicated an authentic inscription. The IGS' conclusion was merely that the patina was consistent with a 1st century date, and did not show signs of modern tools. That is a much more limited claim. Indeed, the IGS is not an expert on 1st century inscriptions, so for a Geological Society to be making definitive claims about the quality of inscriptions would be somewhat out of their field. You should be more careful about what positions you assign to the IGS. 2. Your memory is faulty. The IGS admitted that the patina did not cover all the letters. The accompanying letter from the Israeli Geological Survey states, "We observed that the patina on the surface of the ossuary has a gray to beige color. The same gray patina is also found within some of the letters, although the inscription was cleaned and the patina is therefore absent from several letters." Eylon is thus vindicated. Quote:
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Given all that, I'm not too concerned about your opinion of Eylon's findings. Quote:
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12-31-2002, 04:53 PM | #7 | |||||||||||||
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Re: Re: Re: Re: Re: Aerospace engineer's examination of the ossuary
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Yes, I assume that there are differences between metal and stone. Between inscriptions on metal and inscriptions on stone. About how stone and metal is affected by the passage of time. Therefore, I conclude that a position of skepticism towards the aircraft engineer's position is reasonable. Especially in light of the other evidence by people whose opinions are expressed in areas of their own expertise. Quote:
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You are bootstrapping here. You are using a nonexpert's opinion to claim that an expert's opinion is without merit. You may be convinced by Eylon. I am not. Quote:
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I am assuming that the IGS has some expertise in evaulating stone artifacts. The ossuary is a stone artifact. Their expertise is, therefore, more appropriate for their conclusion than is Eylon's. Quote:
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Eylon has no experience in evaulating stone artifacts. The ossuary is a stone artifact. The IGS' conclusion that he inscription is consistent and 2000 years old is inconsistent with Eylon's conclusion that the inscription is not consistent and most of it was made with nails after it was removed from the burial site. The IGS did note that some of the patina was worn off, but that did not preclude them from reaching a conclusion on the issue. Thus this point is irrelevant. I'm not claiming his approach is invalid. I'm saying I am skeptical of his conclusions because he lacks the expertise to formulat any approach at all, that the IGS has more appropriate expertise and reached different conclusions, and other evidence suggests the inscription is authentic. Quote:
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12-31-2002, 05:42 PM | #8 | ||||||||||||||||||||
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Re: Re: Re: Re: Re: Re: Aerospace engineer's examination of the ossuary
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But why does stone behave differently than metal, Layman? That's the only real question you have to answer here. Instead of waving your hands around wildly and postulating mass armies of strawmen, how about telling us why you think stone behaves differently than metal in this circumstance? Quote:
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In fact, he is the only one with expertise on this area - surface scratches. Not even the IGS nor Fitzmyer have expertise here. You've misidentified the area of expertise that he is speaking on Quote:
Given the fact that this PhD knows far, far more than you ever will about the topic, compounded by your inability to show why his methods are invalid - the question must be asked again: upon what basis do you posit skepticism? Quote:
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You are trying to muddy the issue, by falsely saying that Eylon is claiming (or that I am positing him) to be an expert on the text itself. That's not his area of expertise, and it's not what he's providing results upon. Quote:
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1. findings as an expert in physical sciences, on the scratches in the ossuary stone itself; 2. comments on the text, presented as an Israeli and a student of Aramaic and Hebrew I'm interested in #1 only. I'm waiting on #2 to resolve itself in the larger academic community. Quote:
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1. First you claim that the IGS said the patina indicated that the full inscription was authentic. The reference I gave clearly shows that the IGS did not make any such admission. They made no such affirmative claim. 2. Your original claim was that The IGS study of Patina suggests that the ossuary and inscription are in fact 2000 years old. I responded that it didn't matter, since there was missing patina on the letters, from most of the inscription, so the IGS and Eylon could both be correct - the patina could be 2000 years old, but there could still be surface scratches that would indicate that part of the inscription was a later addition. In fact, wiping off the patina might have been a first step to someone wanting to add text. 3. Lastly, you also said that the IGS claimed the patina covered all the letters. We now know otherwise: The same gray patina is also found within some of the letters, although the inscription was cleaned and the patina is therefore absent from several letters." Quote:
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1. findings as an expert in physical sciences, on the scratches in the ossuary stone itself; 2. comments on the text, presented as an Israeli and a student of Aramaic and Hebrew I'm interested in #1 only. I'm waiting on #2 to resolve itself in the larger academic community. Quote:
You seem to think that, presented with evidence of missing patina, that should have alerted the IGS that they might be dealing with a forgery. Patina can help establish age, but its absence does not necessarily mean that an object isn't old. An are of wiped-off patina would not invalidate a claim of a 2000 year old object. You could take another different ossuary, known for a fact to be from 30 AD, wipe off the patina - would that invalidate its age or authenticity? No. So the absence of patina is not a definitive indicator of age; it is not a test that can be used to rule anything out. Quote:
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But why does stone behave differently than metal, Layman? That's the only real question you have to answer here. Instead of waving your hands around wildly and postulating mass armies of strawmen, how about telling us why you think stone behaves differently than metal in this circumstance? Quote:
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12-31-2002, 06:06 PM | #9 | |||||||||||||||||||||||||||
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Re: Re: Re: Re: Re: Re: Re: Aerospace engineer's examination of the ossuary
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My assumption is that there are differences between metal and stone. Significant ones. And that therefore, an expertise in metal artifacts is not readily transferrable to an expertise in a stone artifact. Especially when there are other experts who are operating in their own field who disagree with the fish out of water. Quote:
These are not unreasonable assumptions. Quote:
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You are once again reduced to semantics. Quote:
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The IGS report concluded that they there was no evidence of tampering and the inscription was original to the ossuary. Quote:
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That is classic bootstrapping. Quote:
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This is an irrelevant tangent. Quote:
I believe I said that the IGS had enough patina to come to a conclusion about the inscription. Unless you can show that the patina is missing ONLY from the parts of the inscription that Eylon claims were forged, this is all irrelevant. Quote:
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12-31-2002, 06:57 PM | #10 | |||||
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Re: Re: Re: Re: Re: Re: Re: Re: Aerospace engineer's examination of the ossuary
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Eylon is professor and director of graduate materials engineering at the University of Dayton. He has specialized in failure analysis investigations in the aerospace industry for more than 30 years. So I'll be real eager to see how your back-of-the-envelope analysis stacks up against his. I'd also be interested to know how you, given your apparent lack of exposure in this area, managed to stumble upon some invalidating differences here, and Eylon mysteriously missed them. Your ego knows no bounds, Layman. Quote:
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If so, then fine. List the differences between how metal and stone behave under analysis. Show that the analysis methodologies in question would be invalidated. Eylon is professor and director of graduate materials engineering at the University of Dayton. He has specialized in failure analysis investigations in the aerospace industry for more than 30 years. So I'll be real eager to see how your back-of-the-envelope analysis stacks up against his. I'd also be interested to know how you, given your apparent lack of exposure in this area, managed to stumble upon some invalidating differences here, and Eylon mysteriously missed them. Your ego knows no bounds, Layman. Quote:
* You are inexperienced in the fields of metals analysis AND geology; * you have provided no documentation that shows such differences, yet continue to crow loudly that they exist; * you have yet to show that, if such differences do exist, that they are relevant to the methodologies that Eylon used here; * you have yet to explain why a noted professor and a PhD of 30 years experience would mysteriously overlook such differences, while you - a run-of-the-mill California attorney - would be able to spot them. Are your assumptions unreasonable? Damn right they are. |
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