JW response would be "obviously the method used to date the great pyramid is flawed"
Here's the thing: Biblical chronology requires the Great Pyramid to be built after the flood as Egypt figures into Biblical events. The only problem JW's and other proponents of a literal interpretation of the Biblical flood account have with radiocarbon dating techniques is when it is on dates BEFORE the flood.
Insight Book: With the Deluge great changes came, for example, the life span of humans dropped very rapidly. Some have suggested that prior to the Flood the waters above the expanse shielded out some of the harmful radiation and that, with the waters gone, cosmic radiation genetically harmful to man increased. However, the Bible is silent on the matter. Incidentally, any change in radiation would have altered the rate of formation of radioactive carbon-14 to such an extent as to invalidate all radiocarbon dates prior to the Flood.
So, if the Pyramids supposedly came after the flood, the radiocarbon dates wouldn't be inaccurate based on the pseudoscience bullsh!t above. However, they date prior to the flood.
If you want to turn your brain to mush, get a load of this crap about problems with Egyptian chronology: (I would appreciate anyone's input on debunking the assertions put forth below.)
Problems of Egyptian chronology. Uncertainties are multiple. The works of Manetho, used to give order to the fragmentary lists and other inscriptions, are preserved only in the writings of later historians, such as Josephus (first century C.E.), Sextus Julius Africanus (third century C.E., hence over 500 years from Manetho’s time), Eusebius (fourth century C.E.), and Syncellus (late eighth or early ninth century C.E.). As stated by W. G. Waddell, their quotations of Manetho’s writings are fragmentary and often distorted and hence “it is extremely difficult to reach certainty in regard to what is authentic Manetho and what is spurious or corrupt.” After showing that Manetho’s source material included some unhistorical traditions and legends that “introduced kings as their heroes, without regard to chronological order,” he says: “There were many errors in Manetho’s work from the very beginning: all are not due to the perversions of scribes and revisers. Many of the lengths of reigns have been found impossible: in some cases the names and the sequence of kings as given by Manetho have proved untenable in the light of monumental evidence.”—Manetho, introduction, pp. vii, xvii, xx, xxi, xxv.
The probability that concurrent reigns rather than successive reigns are responsible for many of Manetho’s excessively long periods is shown in the book Studies in Egyptian Chronology, by T. Nicklin (Blackburn, Eng., 1928, p. 39): “The Manethonian Dynasties . . . are not lists of rulers over all Egypt, but lists partly of more or less independent princes, partly . . . of princely lines from which later sprang rulers over all Egypt.” Professor Waddell (pp. 1-9) observes that “perhaps several Egyptian kings ruled at one and the same time; . . . thus it was not a succession of kings occupying the throne one after the other, but several kings reigning at the same time in different regions. Hence arose the great total number of years.”
Since the Bible points to the year 2370 B.C.E. as the date of the global Flood, Egyptian history must have begun after that date. The problems in Egyptian chronology shown above are doubtless responsible for the figures advanced by modern historians who would run Egyptian history all the way back to the year 3000 B.C.E.
Greater confidence is placed by Egyptologists in the ancient inscriptions themselves. Yet, the carefulness, truthfulness, and moral integrity of the Egyptian scribes are by no means above suspicion. As Professor J. A. Wilson states: “A warning should be issued about the precise historical value of Egyptian inscriptions. That was a world of . . . divine myths and miracles.” Then after suggesting that the scribes were not above juggling the chronology of events to add praise to the particular monarch in power, he says: “The historian will accept his data at face value, unless there is a clear reason for distrust; but he must be ready to modify his acceptance as soon as new materials put the previous interpretation in a new light.”—The World History of the Jewish People, 1964, Vol. 1, pp. 280, 281.
Absence of information concerning Israel. This is not surprising, since the Egyptians not only refused to record matters uncomplimentary to themselves but also were not above effacing records of a previous monarch if the information in such records proved distasteful to the then reigning pharaoh. Thus, after the death of Queen Hatshepsut, Thutmose III had her name and representations chiseled out of the monumental reliefs. This practice doubtless explains why there is no known Egyptian record of the 215 years of Israelite residence in Egypt or of their Exodus.
The pharaoh ruling at the time of the Exodus is not named in the Bible; hence, efforts to identify him are based on conjecture. This partly explains why modern historians’ calculations of the date of the Exodus vary from 1441 to 1225 B.C.E., a difference of over 200 years.