Question

is this universe a hologram...which is 2d but seems to be 3d...olease comment on this.

Answer 1

It depends like for a blind man, he needs to feel everything in 3D to know the shape and structure of it, he cant recognise a cube by touching a 2D picture of of a cube, everything around us are mostly 3D, like a building has dimensions. That's the most I can say about