Skimming, I could not discern the difference between traits and interfaces, although the paper seems to distinguish the two. Could you summarize? I'm interested and I lack the bandwidth for a careful reading at the moment.

You have the reference, read the paper at your leisure.

I intend to.

I don't know if it's what you meant, but I read your comment as overly dismissive. Pulling things out of references makes for better conversation. Of course, if you also don't have time or bandwidth, or it is just really hard to summarize, that is understandable.