She also worked on reflection in programming languages. Also, her work (with her students) on "interface agents", i.e. programs that learn what to do by observi

She also worked on reflection in programming languages. Also, her work (with her students) on "interface agents", i.e. programs that learn what to do by observing and imitating the user, was the inspiration for my own PhD thesis way back when (I took her idea and tried to adapt it to network supervision). They used some kind of k-nearest neighbor algorithm (machine learning wasn't as sophisticated as it is these days!) then added a social dimension by having agents help each other. Lots of cool stuff came out of MIT Medialab back then.