Your 3Dshape-experience memory-store moves around (as you move attention, usually) and prints out shape of current stuff/thing attended to. Oft-repeated things (ie smartphone) can eventually affect structure of 3Dshape-experience, leaving impression on positional categorization within 3Dshape-experience ('bank') itself.
Note that the cylinder (where iphone saved) is tilted, ostensibly because you hold your phone (and tools) tilted. Over years, it is burned into that averaged position on the bank of 3Dshape-experience, even though the bank generally just moves or rotates to align to weird angle.
So the bank usually tilts itself since objects can be at any 3D orientation/scale, but very long-term patterns of phone being at a particular 3D orientation/scale relative to head may result in 'potentiation' of that orientation/scale. There is also a little memory of hand (and even less, of arm) holding phone burned on the bank.
We are talking about the fact that the brain appreciates the 3D shape of objects invariant of perspective which comes with an infinity of possibilities of warp due to object being at any of am infinity of 3D orientations, distances from viewer, and positions in visual field (though usually you saccade so that object of current interest is in center of visual field).