ARGUMENT:
It questions national superiority somewhat by presenting people of the world in lights that are often nonjudgmental.
However, from a postcolonial view, it is very othering, where the accounts the Mandeville author has borrowed from sensationalise foreign people. Also, the curiosity calls into question the narrator's own morality - apparently curiosity was a vice, like Adam and Eve eating the fruit, so not attributing morality may actually be, from a Christian viewpoint, sinful.