the.com/discourse

means Serious, organized talk or writing about a topic — spoken or written communication, especially the formal exchange of ideas.

from From Latin discursus, 'running to and fro,' built from dis- ('apart') and currere ('to run') — the same root that gives us 'current' and 'courier.' The idea was of thought running back and forth between points before arriving somewhere, which is a pretty fair description of what discourse still does, blazer or no blazer.