I argue that the external experience is prime over the internal one.

While I never have full access to the external world (I am always learning something more about it) what I have is enough information and knowledge to navigate it.

The interplay of beings navigating the world with indirect and incomplete perception is the richness and challenge of living in harmony.

If any internal subjective world is taken to be prime we have conflict, because we are not all trying to navigate the external world in a cooperative manner.

Even then we may not be successful but we try to make the world a better place for all that share the space, the external world.

It is the external world that we share, not the internal one. Even so, the internal world (as I see it) is part of the external world by virtue of being housed (located) in the body with a brain. This we namely call the mind. So it is not wrong to say we share the internal worlds as well, but only as external world objects or entities.