How We Act Together is a communal performance in the form of a video stream, which American artists and programmers Lauren McCarthy and Kyle McDonald developed for the SCHIRN. The focus is on gestures as the most elementary forms of social interaction.

Participants are asked to repeat one of four gestures - nodding, screaming, greeting or eye contacting – until exhausted in front of their webcam. As soon as an algorithm programmed by McCarthy and McDonald recognizes the gesture, a video recording begins. The performance aims to be a competition and endurance is rewarded. Indeed, if a user performs the respective gesture longer than the person with the greatest stamina before them, their recording is included in the video stream and becomes part of the accumulated performance. The result is a collective sequence of videos choreographed by software featuring identical gestures by different people. This creates an asynchronous interaction within a group divided both spatially and temporally