blindness bewilderment callowness crudeness darkness denseness disregard dumbness fog incapacity incomprehension innocence insensitivity nescience oblivion obtuseness philistinism rawness sciolism shallowness simplicity unawareness unconsciousness uncouthness unenlightenment unfamiliarity vagueness benightedness empty-headedness half-knowledge illiterateness inscience lack of education mental incapacity naivete unscholarliness