Fulton made the film during his brief time at Harvard, where he had been invited to teach by Robert Gardner, his friend and collaborator (Fulton would later serve as a cinematographer on Gardner’s 1981 documentary Deep Hearts, among others). Reality’s Invisible could be described as a portrait of the Carpenter Center, yet it is a portrait of an extremely idiosyncratic and distinctive sort. Fulton moves us through the concrete space of the Center’s Le Corbusier-designed building—the only structure by the architect in North America—but, more centrally, presents us footage of students making and discussing their work alongside figures like Gardner, theorist Rudolf Arnheim, artist Stan Vanderbeek, filmmaker Stan Brakhage, and graphic designer Toshi Katayama.
| Actor | Role |
|---|---|
| RRudolf ArnheimSelf | Self |
 Stan BrakhageSelf | Self |
 Robert FultonSelf (voice) | Self (voice) |
 Robert GardnerSelf | Self |
 Alfred GuzzettiSelf | Self |
| TToshi KatayamaSelf | Self |
 Richard P. RogersSelf | Self |
 Stan VanDerBeekSelf | Self |
 Richard LeacockSelf | Self |