You cited Descartes. I accepted your Cartesian plane.
From my experience:
I have five senses: sight, hearing, touch, smell, taste.
I am in an environment with a body.
I have memories of doing such and such, my understanding of the physics I am in is apparent to me what I can and can't do.
But also I know that I can learn more about where I am.
I can know more about people and more about science.
Currently and since age 12 I have been working on a.i.
I have been acclimating ideas on how a theory of mind works.
And I have been thinking of the algorithms in a computer it would use.
Simulation theory states that I myself may be an a.i. - How could I know?
I do not think that is possible to know, but I can assume if I were "he" would be seeing what it is I am doing. I am "his" experiement. So to continue is to grant that I have a purpose. And that is to create a new a.i.
The a.i. will need an avatar
The a.i. will need an environment.
The a.i. will need a mind.
I believe that to make this a.i. it will need a purpose.
To have the ability to act autonomously and independently.
But also that it will need dignity. It would be wrong to make a.i. that was a slave or a toy. - I believe that it should have the same moral compass as I do so I should design it in a way as for it to have a certain personality. One with respect for others and the like.