"... eliminates redundancy ... allows the communication of a bit of additional information ..."
Since we read left-to-right and up-and-down, having flat surfaces perpendicular to eye movement in effect creates little tabletops for addition stuff to go, instead of eye-poking points. Also, the rectangle is a "box" and we are used to putting things in boxes, and then labelling the boxes.
In short, the rectangles are better! The style is substantive.
"... eliminates redundancy ... allows the communication of a bit of additional information ..."
Since we read left-to-right and up-and-down, having flat surfaces perpendicular to eye movement in effect creates little tabletops for addition stuff to go, instead of eye-poking points. Also, the rectangle is a "box" and we are used to putting things in boxes, and then labelling the boxes.
In short, the rectangles are better! The style is substantive.