You mention the acronym sodal. And for anyone listening, that scholarship of teaching and learning, we have all different kinds of people that listen to this show. Some of them are chuckling cause they say, of course, we all know what that is, but not everybody does. But i actually don't know even when that phrase first came into be being known and used so commonplace. I'm not sure whether the original genesis was, i'd probably put it on ernest boyer, and probably his 19 91 report. So that might be the starting point.