According to this video at $1.20$, we, humans, perceive objects in $2$ dimensional.
He also gave an example with a sphere:
"Take a perfect sphere for example... If you're looking at a sphere, it looks just like a regular, two dimensional circle! The only way that you can tell it's an actual sphere instead of a circle is because of the hues of light that it receives..."
But my question is:
Question: What about looking at all the other objects from a different angle?
For a sphere, it is really obvious because a sphere is perfectly round on all sides. So no matter where we look and which angle we look at it, it still looks like a circle!
But how about other objects, such as a cube? If we look at a cube from the front, we essentially see a square! But what about looking at the cube with an angle? We wouldn't see a square anymore, we would see $3$ other faces of the cube.
I need help with this part, I am not quite understanding it. Anything is appreciated!