Labels annoy writers and scientists alike. I'm not talking about labels like stupid or Democrat. I mean labels that seem perfectly legitimate, logical, and provable. Just as soon as you think you've got your collection all categorized the way you like it, neat, clear, logical... that's when some upstart from two labs down throws a duck billed platypus into the works. There was a time when we knew that dinosaurs were reptiles, alligators were strict carnivores, and humans were the next evolutionary step after apes, right? When we were growing up, men were men, women were women, and there were no other options, or so our Dick and Jane readers seemed to imply. But today, we're told sexuality is a spectrum, autism is a spectrum, there are no true herbivores or carnivores, dinosaurs had feathers, and Pluto isn't even a planet! Oy.