I love Bruce Sterling's "Design Fiction Slider-Bar of Disbelief," a list of fictions in ascending order of credibility:
9.4 New age crystals, lucky charms, protective pendants, mojo hands, voodoo dolls, magic wands
9.3 Quack devices, medical hoaxes
9.3 Fantasy "objects" in fantasy cinema and computer-games
9.2 Physically impossible sci-fi literary devices: time machines, humanoid robots
9.2 Perpetual motion machines; free-energy gizmos, other physically impossible engineering fantasies
9.0 State libels, black propaganda, military ruses; missile gaps, vengeance weapons, Star Wars SDI
8.9 "Realplay" services, "experiential futurism" encounters, military and emergency training drills, props and immersive set-design, scripted personas
8.8 Online roleplaying scenario games
8.7 Net.art interventions, diegetic performance art, provocative device-art scandals
8.6 Guerrilla street-theater; costumes, puppets, banners, songs, lynchings-in-effigy, mock trials, mass set-designed Nuremberg rallies, propaganda trains
8.5 Fake products, product forgeries, theft-of-services, con-schemes, 419 frauds
Spoiler alert: the list ends with these:
1.0 Engineering specifications, software code
0.5 Historical tech assessment of extinct technologies, the "judgement of history'
0.0 The ideal and unobtainable "objective truth" about objects and services
