[videoembed size="full_width" alignment="center"][/videoembed] Whoooaaa! This "street illusion," Mind Your Step, by Swedish photographer Erik Johansson is my favorite street illusion out of all of them that I have ever seen. And I've seen more than one! So have you! But this is the best one. "Be careful, don't fall into the thing!" is what we're all thinking even though we ...