At MIT's Center for Constructive Communication, researchers faced a campus where students on opposing sides of the Israeli-Palestinian conflict could not hold face-to-face conversations. So each group deliberated among themselves, and then the best statements from both sides were woven into an audio medley using what is called meronymity — partial anonymity. The voices are altered enough that you cannot identify the speaker, but you can still hear the prosody, the emotion. When both groups heard the medley, they depolarised significantly.