[Paradox]

I Agree, why can't we just "grandfather" Pluto in as a planet?

[Calvin Locke]

I think the problem is "Xena", the "Tenth Planet". It's on the order of a third larger, iirc.

Pluto makes it, but Xena doesn't? would be the argument.

Personally, I'd grandfather it, but they should put it on hold until they figure out the difference between
black holes and MECOs, and what to call objects that are a tad smaller than a brown dwarf, and rewrite all
the text books at once.