Yesterday I saw Neil deGrasse Tyson give a talk about Pluto's fall from the pantheon of planets. It was the best public talk I have ever seen. He doesn't seem to care too much whether Pluto is a planet or not. He says what matters are relations; science is about the connections between ideas and that is how it should be taught, not as something to memorize. Anyways, Pluto is fundamentally different than the terrestrial or gaseous planets. If you still think Pluto should be a planet then your a mystic looking at science as an oracle instead of what it really is: a temporary explanation before the next better theory comes along.