Re: An intuition pump

> 	1.  Earth, world, globe -- (the 3rd planet from the sun; the planet on 
> which we live; "the Earth moves around the sun"; "he sailed around the 
> world")
> 
> A few centuries ago it was not a globe, but a flat thing and it was not 
> the 3rd planet, it was the centre of Universe.

This is about the point to go off and read _Naming and Necessity_, I
think.  Naming is a lot more about effective communication than it is
about the truth of definitions.

    -- sandro