#### Dicart

**Registered Senior Member**

Wrong the Retina is a three dimensional object .

Yes, all objects are 3D objects, soon they have two sides...

But this is not what we talk about.

The projection of light on the retina produce an information giving only the 2D aspect of the 3D object.

2D object can never exist . It is missing a key dimension . Hence can not manifest .

Not sure, some think that all informations in an black hole could be stored on his 2D surface.

https://en.wikipedia.org/wiki/Holographic_principleWIkipedia said:Theholographic principleis a tenet of string theories and a supposed property of quantum gravity that states that the description of a volume of space can be thought of as encoded on a lower-dimensional boundary to the region—such as a light-like boundary like a gravitational horizon. First proposed by Gerard 't Hooft, it was given a precise string-theory interpretation by Leonard Susskind,[1] who combined his ideas with previous ones of 't Hooft and Charles Thorn.[1][2] As pointed out by Raphael Bousso,[3] Thorn observed in 1978 that string theory admits a lower-dimensional description in which gravity emerges from it in what would now be called a holographic way. The prime example of holography is the AdS/CFT correspondence.

The holographic principle was inspired by black hole thermodynamics, which conjectures that the maximal entropy in any region scales with the radiussquared, and not cubed as might be expected.In the case of a black hole, the insight was that the informational content of all the objects that have fallen into the hole might be entirely contained. The holographic principle resolves the black hole information paradox within the framework of string theory.[4] However, there exist classical solutions to the Einstein equations that allow values of the entropy larger than those allowed by an area law, hence in principle larger than those of a black hole. These are the so-called "Wheeler's bags of gold". The existence of such solutions conflicts with the holographic interpretation, and their effects in a quantum theory of gravity including the holographic principle are not fully understood yet.[5]in surface fluctuations of the event horizon

No , the mind interprets the image in the 3D because the brain its self is made of three dimensional molecules . 2D can not become 3D .

The mind interpret the image in 3D because there is a special dedicated neuronal network doing the work in the visual system of the brain. The brain can not see in 3D, it uses 2D informations to recreate 3D information.

And he can be tricked...

Look :

Thats what you do with a sketch on a sheet of paper per example showing a cube "in 3D".

The sketch is in 2D (thats for sure), but the brain invent perspective and let you think the figure represent something in 3D.

But it is not, it is a sheet of paper...