Mary Hess has a good point about the nature of science with respect to the reclassification of Pluto recently. True science continually articulates and revises its view of the world – it is dynamic rather than static. To keep Pluto as a planet, because that’s what all the textbooks in schools say, defeats the nature of the scientific enterprise. More at Tired of “Pluto ‘plaints”.
Also, the process that produced the reclassification demonstrates that science is also a communal process with social dimensions.