I just kind of instinctively hate on every attempt to reconstruct or understand extinct civilizations- even when dealing with contemporary foreign peoples, everyone has a tendency to collective their opinion of them and to confuse their outward, public behavior with their inner life, as though saluting a flag say implies an actual psychological dedication to it- maybe they are just afraid to look weird to their neighbors, who are afraid to look like traitors to a small and insane minority political class, for example.
"Ah, those endless forests, and their horror-haunted gloom! For what eternities have I wandered through them, a timid, hunted creature, starting at the least sound, frightened of my own shadow, keyed-up, ever alert and vigilant, ready on the instant to dash away in mad flight for my life. For I was the prey of all manner of fierce life that dwelt in the forest, and it was in ecstasies of fear that I fled before the hunting monsters."
Jack london, "Before Adam"