Showing posts with label statistics. Show all posts
Showing posts with label statistics. Show all posts

Tuesday, March 13, 2007

WWJB? (Where Would Jesus be Buried?)

Jay Cost of RealClearPolitics fame has weighed in on the "Jesus Tomb" debate on the side of the skeptics. His principal target is the argument from statistics and probability. It differs from Randy Ingermanson's argument in significant respects (I like Randy's better) but others will have to assess its merits. His case includes, however, some historical claims that I think are problematic. Like,
Few scholars - including those who think Jesus was not bodily resurrected - believe that he was buried at all.
Actually, almost all scholars think he was buried. A few (e.g., J. D. Crossan) suggest the Romans might have denied Jesus' body a proper burial, but most believe his body was buried either in a shallow trench grave or (more likely) in a tomb, as indicated by the Gospels.
Even if we assume that Jesus was buried, it is exceedingly unlikely that he would be buried in or around Jerusalem. . . . One would expect the Jesus family tomb, if it did exist, to be either in the north (the family's first century A.D. home), or in the south (the family's ancestral home). There is no reason to expect it to be in or near Jerusalem.
First, all four N.T. Gospels agree that Jesus was buried immediately just outside of Jerusalem. John (19:41) adds that the tomb was near the place of execution. The Gospels give no indication that Jesus' family and friends intended to move his body, certainly not to Galilee or down to Bethlehem. I can picture a regal procession bearing Herod the Great's body south to the Herodion (near Bethlehem), but surely his was the exception to the rule that people in Jesus' day were buried more or less where they died. (I'll happily stand corrected on this one.)

Second, the N. T. (Acts 12:17; 15:13; 21:18; Gal 1:19) seems to indicate that James, Jesus' brother, remained in Jerusalem after Jesus' death. It seems quite plausible that others in Jesus family would have settled there as well. The "Jesus tomb" folks like to point out that there is no ossuary for Joseph in the Talpiot tomb--only one for Jesus-son-of-Joseph. So, the theory goes, Joseph died earlier in Galilee and was buried there. Thereafter the clan moved south.
Everybody had an interest in finding his body. It would have been a prize "get" for early Christian opponents - who were of course centered in Jerusalem - to produce it. How did they miss it when it was so close by?
This may well be right (cf. Mt 27:64; 28:11-15). Charlesworth makes a similar point. But we need to keep in mind that the "Jesus tomb" hypothesis proceeds by challenging the reliability of the Gospels' testimony. That is, the Gospels preserve later traditions and pious embellishments rather than (or mixed with) authentic history. In the aftermath of Jesus' death, says Tabor, none of Jesus' followers was claiming that Jesus' physical body had risen. That all came later, after 70, when the whereabouts of the Jesus family tomb were unknown. So the important historical question is: how soon after the crucifixion were Jesus' followers publicly proclaiming his resurrection?
Jesus' was a lower-class family from Galilee. Where did they acquire the resources to purchase what the original investigators call a tomb for a middle-class family?
The claim that Jesus' family could not have owned the Talpiot tomb may well be correct, though two of James Tabor's claims (here or here) weigh against it: (a) that the tomb itself is rather plain and (b) that Jesus had friends and supporters whose means could have made up for his lack (cf. Luke 8:3; 23:50; John 11:38; ).

Jay Cost's statistical argument may ultimately be persuasive, but some of its historical pillars need shoring up.

Saturday, March 10, 2007

James Tabor's curious appeal to Randy Ingermanson

James Tabor's latest post is a plug for the book by Simcha Jacobovici and Charles Pellegrino that accompanies the Discovery Channel documentary. As someone who bought the book (before watching the film), I agree with Tabor that the book moves along nicely and tells a good tale. It's a fun read with great graphics.

For additional praise of the book, Tabor points us to Randy Ingermanson, self-described physicist (U. C. Berkeley Ph.D.) and author whose work lies at the interesection of faith and science. But here's the thing: the page (posted March 3, 2007) that contains Ingermanson's brief commendation of the book is also the page where he lays out, in great detail, what I consider to be the most damning critique to date of the statistical argument for identifying the Talpiot tomb with Jesus and his family. Ingermanson writes as a Christian (so one could suspect him of bias against the documentary) but there isn't a hint of defensiveness or righteous indignation. And he uses phrases like "binomial distribution"without breaking a sweat.

Bottom line: Ingermanson's statistical argument (which you really should read in its entirety) reaches a stunning conclusion: the odds are 10,000 to 1 against this being the tomb of Jesus of Nazareth. I'll let others (hopefully including Andrey Feuerverger) respond to Ingermanson's math. All I'll say is that his calculations (using the same basic data) do not bode well for the Jesus family tomb proposal.

Tabor has read enough of the post to know that Ingermanson disputes the book's thesis. But what puzzles me is that he cites the incidental comment about the book but completely ignores the substance of a potentially damning argument. Hopefully Feuerverger (and qualified others) will respond.

In the mean time, here are a few of Ingermanson's points. For the rest, do see for yourself.
  • Since Maria and Mariamenon are two of many variants of the name Mary, they should be treated as such. (If one ossuary had read, say, Mariam, Jacobovici would have been just as inclined to investigate the Jesus family connection.)To treat Mariamenon as more than a variant of Mary, and thus as more statistically significant, one has to show that this variant is distinctly appropriate as a designation for Mary Magdalene. This is precisely what they have not done.
  • The correct factor to use when estimating the probability that we have found Jesus' tomb is 80,000, not 1,000. That is, we want to know "how many men in Jerusalem could have conceivably had a father named Joseph and who could have been buried with five persons with a given set of names related to Jesus of Nazareth (2 Marys, 3 males with names chosen from the known brothers and disciples of Jesus)." The number of males who lived during the relevant period is estimated at 80,000.
  • The proper question is not: "How many such men might have existed and then been buried in family tombs of the type we've found?" Feuerverger "effectively added a factor that is irrelevant -- being buried in a family tomb. There is no reason to believe that the family of Jesus of Nazareth was more likely to have a family tomb than other families."
  • "The probability is VERY low that Jesus of Nazareth had a son." This fact should have been included in the Feuerverger's calculations.
UPDATE (March 12, 2007): In a comment posted on Mark Goodacre's NTGateway blog James Tabor, gentle and respectful as ever, has promised a reply to the substance of Ingermanson's critique:
What a model of sensibility and good taste. I do not think he is correct on his statistical analysis as far as I can follow it, but I want to consider it further and run it by the people I am working with. I have a take on the historical circumstances that I think really adds to the picture considerably from the work I have done on the Jesus Family.

Thursday, March 8, 2007

James Tabor on the 10th ossuary

I posted earlier on the shifting fortunes of the so-called "James ossuary." Apart from its role in the on-going antiquities fraud trial of Oded Golan, the issue garnering attention on the blogs is whether or not it might have come from the Talpiot tomb. Even if someone forged brother of Jesus, the first half of the inscription--James, son of Joseph--could be significant in its own right. Two recent blog entries by James Tabor are sure to add fuel to this debate.

In the first, from March 6, 2007, Tabor takes issue with the story (recounted, e.g., here) that Joe Zias claims the 10th Talpiot ossuary was plain, un-inscribed, and thus relegated to the lowly courtyard of the IAA warehouse where it cannot now be located. According to Tabor, Zias acknowledged to him on June 30, 2006, that
he had no idea what might have happened to it but it was possible, in those days, that it was put back in the courtyard and just left and forgotten. He also suggested it might have just been misplaced in the IAA warehouse and gave me examples of other things that had just gone missing, or were just misshelved and could not be found.
So we have two versions of what happened back in 1980, both attributed to the same source: Joe Zias. Curious.

In the second post, dated Mary 7, 2007, Tabor explains that the designation "missing," as applied to the 10th ossuary, was not coined by him or Jacobovici for dramatic effect. Rather, it was used by the curator of the IAA warehouse in Bet Shemesh, when Tabor and Shimon Gibson inquired about the 10th bone box in 2005. And in response to suggestions that the 10th box was placed outside because it was plain, Tabor observes:
the other “plain” ossuary (80.506), of the four listed “uninscribed,” is not much to look at, yet it was retained and is on the shelves today, and there is a photo and description of it in the files. In contrast there is no photo nor description of the “10th.”
Why would some plain boxes be catalogued and photographed while others are not?

I'm struck by three things in reading Tabor's latest posts. One, he knows more than he is telling. Two, back in the 70s and 80s the IAA may have had difficulty handling the influx of archaeological artifacts. And three, Tabor (at least in print) is remaining remarkably gracious, irenic and non-combative, in the face of harsh criticism. If only the rest of us were as well-behaved.

Ground Zero in the Jesus Tomb Debate

Whether due to fatigue or the onset of March Madness, "Jesus tomb" blogging is definitely slowing. The key issues continue to be two:

1. The statistical improbability of the collection of names inscribed on the Talpiot ossuaries.

How significant is it that we would have in one tomb the names Jesus son of Joseph, Maria and Jose, all of which are known to belong to Jesus' nuclear family? [Far less clear is the statistical relevance of the other three Talpiot names: Mariamenou Mara, Mati and Judah son of Jesus. As for James son of Joseph brother of Jesus on the separate James ossuary, the jury is literally out.] Evidently Andrey Feuerverger, Professor of Statistics at U. of T., has been quoted and misquoted, understood and misunderstood. Alas, most of us know just enough to know that we don't know enough to add anything useful to the debate. Meanwhile the beseiged James Tabor, aided by statistical "advisors," continues to find the stats in the documentary persuasive and promises more blog entries to come.

2. The historical improbability of several key claims.
These claims include:
  • that Jesus' family would have had a family tomb in Jerusalem
  • that Jesus' family would have continued to use a tomb (containing Jesus' bones) between 30 and 70 C.E. while the Jesus movement was emerging
  • that Jesus of Nazareth was married
  • that Jesus of Nazareth had a son
  • that Mariamenon was a name applied to Mary Magdalene in the 1st century
  • that Magdala (Mary's home town on the Sea of Galilee) was a center of Greek language and trade (thus explaining why her inscription is in Greek while her "husband's" is in Hebrew characters)

Sunday, March 4, 2007

Stats anyone?

The key statistician used in the Talpiot documentary research was Andrey Feuerverger whose reply to critics and inquirers is now available on his website. Mark Goodacre reflects on some of his comments.

UPDATE (3-9-07): All agree that Feuerverger's statistics can only be as good as the assumptions underlying them. Chris Heard, over at Higgaion, notes problems with some of those assumptions. He links to posts by Mark Goodacre and Richard Bauckham but also offers his own insights. For example, on Feuerverger's assumption that Yose/Yosah on ossuary #4 (allegedly the Joses of Mark 6:3) is not the same person as Yehosef (father of Yeshua) on ossuary #1 (allegedly Joseph, the father of Jesus of Nazareth), Heard observes:
I’m not sure why this should be assumed. I suppose that it seems common-sensical to think that the same person wouldn’t be named in two different ways on ossuaries in the same tomb, but then again, it’s hardly a slam-dunk case. The filmmakers argue that יוסה is a diminutive form of יהוסף, but that the Talpiot יוסה is not the Talpiot יהוסף, but at the very same time, they want you to believe that the Talpiot Μαριαμήνου Μἀρα is Mary Magdalene, even though no early Christian source—not even the apocryphal Acts of Philip, on which the filmmakers apparently rely—calls Mary Magdalene by this name. This double-standard—the same man couldn’t possibly be known by his full name on one ossuary and a nickname on the other, but a woman could be known on her ossuary by an otherwise completely unattested name—undermines the entire case.
Jacobovici may be right that Yehosef and Yose are different people, but it does seem to be a case of assuming what you set out to prove.