In the 1980s, he became known primarily as a sculptor of refined sculptural furniture and ambitious and useful interventions in public space. (en.wikipedia.org)
Not the most useful intervention for Miliband. (politics.co.uk)
Both Okonofua and Eberhardt suggested that useful interventions with teachers would help them to view student behavior as malleable rather than as a reflection of a fixed disposition, such as that of troublemaker. (sciencedaily.com)