David Carse on holograms
“Another similar analogy which hasn’t been around as long is the hologram. A hologram is really only an illusion created by projecting a beam of coherent light. Yet a very sophisticated hologram would have the potential to look and sound and otherwise seem very ‘real,’ as real as physical reality, so that you could interact with a hologram if a person as if there were a ‘real’ person there, which of course there wouldn’t be.
Yes, but a hologram wouldn’t really seem real, because it isn’t substantial; you could put your hand through it or walk through it, for example. But that’s why I say I don’t see how it applies; I don’t think you or that wall are dreams or holograms, because they are very substantial’ I can’t walk through you.
Exactly. So I ask you, under what circumstances would a hologram seem very substantial? Or put it another way, to whom would a hologram appear solid?
Another hologram...”
From Perfect Brilliant Stillness











