Ego: validator of reality powered by arrogance

Ego validates our existence
Ego validates our reality

Ego validates our current thinking, and what we think we see, as our reality
With ego, we’re arrogant enough to know what we see and feel is real

Only by means of our ego our reality feels real, is real
What is real, or what is left, when ego shuts down?

If you were an AI trying to learn or feed from a simulation
Ego is how you would make feel your subjects at home in reality where there is none