In-depth collective reading of philosophy has been at the heart of SenseLab activities since its inception, and is equally central to the 3 Ecologies Institute. A main reading group has been continuously active for 16 years, and has generated numerous spin-off groups, as well as experimental forms of group reading practice. This ongoing concept-work enters into synergy with practices in registers other than language to form the “research-creation” matrix explored by 3E. In this video, Andrew Murphie and Lone Bertelsen discuss the ethos of “hypothetical sympathy” guiding the collective reading and describe the most widely used experimental technique, which we call “conceptual speed-dating.”