Whether anything a perfectly simulated human brain (or other organism see the fruit fly simulated brain) does is actually real - in the same sense it’s real for you and me - is still up for debate i think.

Assuming it’s possible to perfectly simulate a human brain

A “perfect simulation” is no longer a simulation.

The definition of the word “simulation” is:

> A simulation is the artificial imitation of a real-world process, system, or event using a model

As we know, “all models are wrong; some models are useful”.

A “perfect simulation” is, then, an oxymoron.