Is he wrong??

[Letum]

Originally Posted by Yahoshua

So.....the external world being the world outside of oneself?

Yes.
Outsides ones mind.

I make the distinction because we directly experiance the internal world.
We do not experiance the external world at all, we just experiance sense data that
may, or may not relate to the external world. We have no way of checking if it does
because we can not directly experiance the external world in any way.