what a dope idea, it reminds me of the sharpie post.
What is 2- and what is 3-dimensional? At first sight the black outlines seem to be the object, but with a change of angle reality shifts. The black lines only form a bench or a chair from one angle, from every other point of view there is no concrete image visible. With the shelf the black lines form a bookcase only from one angle.
peace & love.