Great work, as usual AOM. I believe that the premise on which this poster based his/her conclusions is a false one. And this is that if an archeological document is a copy of an original then it must be questioned for its authenticity and, based on conclusions that defy any quantifiable logical analysis, should rightly be discredited. On this basis, however, one can question anything, even a round earth, and making false conclusions from such questioning, one can discredit the accepted position by scholars that science proves the earth circular, not flat.
In order for an ancient artifact to be discredited it must be done on the basis of verifiable data that is accessible to all, and not a select few. To really discredit VAT 4956 we need such verifiable data. But all we have been given is artificially rigged questions that then lead to false conclusions which themselves are without any factual basis. What this poster is obviously doing is proving something that he/she has already assumed to be true, and from this he/she builds a theme.
The only REAL way to discredit VAT 4956 is to produce a genuine archaeological tablet with the exact same celestial phenomena mentioned in VAT 4956, but instead, attributing it to the year 625 BC!! THEN and only THEN can the Watchtower and it apologists ARGUE THEIR CASE. In the absence of such data they are what Aussies call "all piss and wind".
Can we verify whether an astronomical tablet is a fake or at least if its data has been corrupted? Yes, as you pointed out, astomomical phenomena which has been recorded, verified, and attributed, becomes absolute, hence the expression "absolute date". Carl Olof Jonsson does provide one such example of a corrupted astronomical tablet.
The Watchtower, in an attempt to verify the date 537 BCE as the date for the Jewish return to Judah, have often quoted an astronomical document catalogued as "Strm. Kambys. 400" now residing in the Berlin Museum, I believe. It details celestial phenomena which is attributed to the seventh year of Cambyses, the son of Cyrus. The Insight book volume 1, page 453 approves of this document and says:
"Thus this tablet establishes the seventh year of Cambyses as beginning in the year 523 BCE. This is an astronomically confirmed date"
Jonsson states:
"If the society's criticism of such documents as VAT 4956 are valid mainly because it is a later copy of an original, then such criticism would apply with equal force to their own favoured document, the Strm. Kambys 400".
He points out that as early as 1903 scholars such as one FX Kugler have pointed out that this document is a copy of a text that can be verified as defective. Indeed the copyist, having many gaps in the original, filled in these gaps [called "lacunae"] with his own sloppy calculations!! Jonsson quotes Kugler as saying:
"Not one of the astronomical texts I know of offers so many contradictions and unsolved riddles such as the Strm. Kambys 400"
Thus for a tablet to be true it must be:
Recorded. Verifiable. Attributed.
The problem with Strm. Kambys 400 is that although it has been recorded and attributed to a certain year, only a small fraction of the data is verifiable. Much of the celestial phenomena, including the lunar eclipses quoted by the Insight book are private calculations of the copyist hence are NOT verifiable!
[Taken from "Gentile Times Revisited - 4th Edition page 85 ff]
To defend an indefensible astronomical position the Watchtower [and its apologists] indulge in a curious blend of conjecture and double standards. Until verifiable astronomical data can be shown to prove VAT 4956 to be false, it must be held in the higest regard that it so richly deserves.