Great work Doug. I love your find of how the Insight Book deceptively quotes Ptolemy by excluding half the sentence. The Watchtower sets out to undermine Ptolemy through use of selective quoting that misrepresents the source.
"Professor O. Neugebauer states that Ptolemy complained about 'the lack of reliable planetary observations [from ancient Babylon]. He remarks that the old observations were made with little competence, because they were concerned with appearances and disappearances and with stationary points, phenomena which by their very nature are very difficult to observe.'" Insight p.456 "It is certainly a result of this situation that Ptolemy states that practically complete lists of eclipses are available since the reign of Nabonassar (747 B.C.) while he complains about the lack of reliable planetary observations. He remarks that the old observations were made with little competence, because they were concerned with appearances and disappearances and with stationary points, phenomena which by their very nature are very difficult to observe.'" The Exact Sciences in Antiquity, Otto Neugebauer , p.98