Do we see in 2D?

You can only see 2D, even though you are a 3D creature experiencing a 3D world. It's not possible for us to look at all angles of a 3D object at the same time. Each of our eyes only receives a 2D image of that object. So how do we know it is 3D? Remember how my 2D friend is only able to see a 1D line? But due to seeing contrast and colours, she could make out the corners of her safe and see if some 3D creature stole her gems. She sees in 1D, but she can perceive in 2D. Our brains are very good at doing the same thing, puzzling together a 3D representation by interpreting cues in our initial 2D image. From our eyes, we get two slightly different angles on the world. We compare them and use shadow, movement and size to infer depth. So even if the image we see is 2D, our brain can interpret it in a 3D context.