Trust me, this was a pretty high-tech realtime composite job, but it was just that - compositing. There was no "projection" in Wolf's studio. Right; and somewhere someone apparently things 'Hologram' means "Fancy compositing on the fly".

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I'm like one of those idiot savants...well, except for the savant part.
"In order to increase awareness of the homeless, security have been given binoculars."