[panzerfan]

Unfortunately, how much trust would we put in Koizumi... in some sense, when we doubt the intrinsic value of all the information presented, it would then becomes incredibly difficult to decide what is true, given that Kyon himself is questionable as he has his own bias. Nagato does convey more weight to Kyon given her track records, so we have no choice but to conclude that Nagato's accounts hold more weight to Kyon, our source of information.

Kogetsu Shirogane's argument would make how that everyone "stand on the shoulder of giants" regarding human knowledge to be quite problematic given that most of us have no way of knowing much of historical information beyond what we were told, who may not know themselves... such as how we call out on the site of cremotoriums, let along how we go about to figure out sites of the fabled X'ia dynasty of China.