A few months ago I debated atheist Jersey Flight over the idea of “moral realism” (e.g. the idea that moral statements refer to objective states in the universe). My case was that any conversation on ethics must necessarily presuppose moral realism in order to make any progress. The discussion is now posted on youtube.
You might notice that the video graphics are periodically replaced by captions that present counterpoints to my own arguments. These captions are a post-hoc reposte by Jersey (who edited the video), I may reply to some of his objections in the comments.
Please let me know what you think of the exchange either here or in the youtube channel comments.