Great article!  We also need to call into question the notion that a self-appointed "authority" can decide on a definition and then impose it on the entire world. Science is not determined by decree of authority, yet the media and textbook publishers have unfortunately treated the word of the IAU as law, with headlines stating that Pluto is no longer a planet because the IAU voted that way!  It turns out that only four percent of the IAU even voted, and most were not planetary scientists but other types of astronomers. An equal number of professional planetary scientists immediately signed a petition rejecting their decision. This issue has always been an ongoing debate with two legitimate sides in spite of the media's failure to report it as such.