The holograms in the USC project, however, are actually 3D, and are projected into space rather than onto a screen. The New Dimensions team has also taken pains to make the holograms into more than simple projections: For example, 80-year-old survivor Pinchus Gutter, who saw his family herded into a Nazi camp's gas chambers, sat for hours answering 500 questions about his experience in order to create a hologram that can field questions from a live audience.