When Velisarios has to carry Father Arsenios to the doctor's house, it allows him to make up for rudely lifting Father Arsenios without permission and illustrates how someone who did once abuse their power can work to atone for that abuse. Dr. Iannis's note about who originally destroyed Constantinople reminds the reader that winners of a conflict are the ones who get to dictate history--and he implies, that, in this case, they flat-out lied.