The upshot of Thurston is that Ptolemy's observations are so far off from modern ones, that researchers simply couldn't make sense of them. The critical passage is:
"C2 Several writers have suggested that Ptolemy adjusted (or even fabricated) his observations. In particular, Swerdlow wrote that Ptolemy “could not have observed some of the reported elongations” (he certainly could not have observed two MMEs 37 days apart) and “Ptolemy’s adjustments of whatever he observed were of the order of 1◦” [2, page 54]."
Edited 1 time(s). Last edit at 31-Oct-15 01:10 by Laird Scranton.