"Sunstone is a landmark tape. Symbolic and poetic, it is a pivotal work in the development of an electronic language to articulate three-dimensional space. The opening image is an iconic face, which appears to be electronically "carved" from stone. A mystical third eye, brilliantly crafted from a digital palette, radiates with vibrant transformations of color and texture. Sculpting electronically, Emshwiller then transforms perspectival representation: the archetypal "sunstone" is revealed to be one facet of an open, revolving cube, each side of which holds a simultaneously visible, moving video image."