> Holography for example has been a hot topic since the 1600s I can't figure out what you mean by this, unless you're referring to Pepper's ghost which is not

> Holography for example has been a hot topic since the 1600s I can't figure out what you mean by this, unless you're referring to Pepper's ghost which is not a hologram at all. If you photograph a Pepper's ghost illusion you get a regular photograph, not a hologram.