Celebrating the return of his favourite recurring character with his latest panel, frequent cartoon contributor to the New Yorker Paul Noth, as we are informed by Things magazine, shares his fascination with optical illusion, including his signature duck-rabbit, first appearing in the humour publication Fliegende Blรคtter by an anonymous artist in 1892 and soon being ensconced in common parlance by Ludwig Wittgenstein, describing the phenomenon as a bi-stable (or multi-stable) percept, philosophically put “seeing that” versus “seeing as” with an intermediate study in psychology and the original paradigm shift. Much more at the links above.