system
Given the following post, respond as if you're commenting on Reddit:
human
Explain: “The brain is simply second-person perspective of first-person experience”

I got this from a Bernardo Kastrup's video where he mentions that this is empirically provided and accepted. I couldn’t understand this. Can someone please give a simple explanation to me (newbie)?
gpt
Your brain has an intrinsic appearance that looks like your inner life. Your thoughts, emotions, perceptions, etc. Your brain also has an extrinsic appearance that looks like matter, specifically a brain and its associated processes (neurons firing, etc.). These processes correlate with its intrinsic appearance. So there exists both a first-person and a second-person perspective of your brain.

As a monist idealist, Kastrup extrapolates this idea to the universe as a whole. His position is that the category of experience we call matter is the extrinsic appearance of the mental states of "mind at large."