I agree with your view on this. We can not compute the computation that we are contained within. As for the "internal" vs "external" perspective of this computa

I agree with your view on this. We can not compute the computation that we are contained within. As for the "internal" vs "external" perspective of this computation, I have found the analogy of a music record a good metaphor for explaining. The entire album is contained staticly on the disc all at once as viewed from the external. However, from an internal point of view as the record needle it exists as a flow of time over the record.