Overheard my legal studies teacher talking about it. It originated in the King's Court but then he got tired of it and gave it to the Chancellor's court where it was developed. Most would argue Chancellor though.
Mind you your definition only applies to developed world and thus not the " world". Your view is extremely bigoted and does not take into account any external factors at all which nullifies your otherwise, very valid argument. An example being, war veterans who participated in conflict come home...
Unless its a poem or short story, would you actually use the basic techinques like methapors/similies? I thought the techniques would be based more around motifs/symbols/characters rather than small literary techniques.