Re: Tomograms,not holograms.
Actually you don't need an expert to tell you this. I recognized it wasn't a hologram instantly. I didn't experience the show as trickery either. They were doing something which in general is honestly new for television and I thought it looked cool.
My opinion is that CNN has this cool new gimmick and they wanted to use it. All the complicated words about what it really is would mean 90% of the audience would phase out. Quite likely the speaker didn't even understand it fully.
"A what?"
"Sort of like a hologram"
"Ladies and gentlemen... It's a hologram!"
I'm pretty sure holographic projectors exist. I think I saw the news items fly by. The quality is nothing like you saw on CNN. In general it's a vague whispy image comparable to the starwars movies. If we assume some high tech shadow government they might have a version that produces clear illusions. But why would they involve CNN in an elaborate deception?
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