This is going from the ridiculous to the absurd.  Honestly who cares about ethos and pathos and what Aristotle though about 2,500 years ago.  Now, we get assigned homework to review some nobodies thesis published at Purdue University by some PhD. Wow, Brett, I do not do homework assignments anymore.  I would estimate, very conservatively, that 13% of the people that read your last two comments don't really care about ethos, pathos or in helping you make a very straight forward decision to require those wanting to comment on stories to disclosure their identities or not.  Dang, do your job.  Now, I would much rather talk of things that are important to me like the book the "Prophet" written by Kahlil Gibran.  Lets talk of love, marriage, children, eating and drinking, friendship, good and evil, pleasure, beauty, death and dying. Simple everyday things.  You must have read Gibran. And for goodness sake Brett do your job.  This is not an academic exercise it is a business decision.