What we
call something is not important. It is just a convenience. Whether we call Pluto a planet or a blyxl doesn't alter what we know about it or what we may discover about it in the future. Anyway, I suspect that in fifty years or so, nobody will be fazed by the fact that Pluto isn't a planet. After all, in the 19th century Ceres, Vesta, Juno and Pallas were all classified as planets and now nobody cares about them not being called planets
. In fact, their story is much the same as Pluto--once we realised that they were just the biggest things in a whole bunch of trash, we stopped calling them planets.
Geoff