The two events are well documented in the sense that the proceedings were made available based on the audio material (Riemens 1989, Riper et al. 1990). Paradiso and Hack-Tic published the first edition of the proceedings of the GHP in 1989. Village Design Inc. in San Francisco (USA) published the second edition of these proceedings, also in 1989 (Riemens 1989). An impression of the Seropositive Ball was published by the Centre for Innovation and Cooperative Technology at the University of Amsterdam (Riper et al 1990).
Around 1000 people took part in each of the events. Each event used on and offline communication in connection with one another. The two cases took place before the Internet became commercial, they occurred before the 'dotcom' hype, before millions of people went online. They were exploration events. On both occasions it was a first-time shared experience for many people present.
Because I have approached the case studies from the perspective of 'producing multiple presences', I have asked close collaborators of the time to review the work presented here. Key-informants for the Galactic Hacker Party, which will be discussed in this chapter, were Rop Gonggrijp, Patrice Riemens and Jan Dietvorst. Rop Gonggrijp and Patrice Riemens co-produced the event with me as external partners and I will introduce them later. Jan Dietvorst is the colleague from Paradiso who was specifically involved in the networked events to be discussed. Because I will also discuss Paradiso's methodology, I asked Jan Willem Sligting, a former colleague who at the time was, and still is, the musical artistic director, and also Pierre Ballings, the current executive director of Paradiso, to comment specifically on the section about Paradiso.