In that case, from 1930-2006 you were wrong.
Furthermore, you were wrong and didn't know it.
And you didn't know it, because you didn't have tools powerful enough to catch it.
And you praised yourselves in 1930 for something that was labeled wrong.
And you sent a message out into space in 1974 from Aricebo with the wrong information on it, because it was based on mislabeling a planet that wasn't a planet like the rest.
LOL!
I'm not even going to pretend you're that hard of understanding, AV, but for lurkers, I'll address it.
No, Not wrong. The definition of what a planet was, included Pluto up until 2006. The problem was, that many, many other solar objects also qualified as "Planets" too even though we didn't really identify them as such, because the definition wasn't all that strict.
Again, "Definitions" aren't "Facts". Scientists are a particularly pedantic group in general, and rather like things to be specific and well-defined, especially in scientific research. so when they started noticing all these other solar object discoveries that for all intents and purposes, were duplicates of Pluto for the same reasons, then the Astronomical Society felt that the bullet had to be bit. Once the Astronomical Society met and refined the definition of a Planet, (and defined, refined, and even created a number more) Pluto no longer fell under what we defined as a "Planet". See? Easy! Nothing about Pluto changed physically, no facts changed - it didn't shrink, it wasn't outlawed, it didn't have to go into hiding, no warrant was issued for its arrest, etc.
And Thalidomide was mislabeled too, wasn't it?
And the Challenger blew up because you were wrong too.
.....what? ......just, what??