Consciousness, Observers, Physics, Math. I don't even think I'm saying something controversial when I say we don't experience reality as it is.
Think about a piece of shit on the ground. It smells viscerally disgusting to you. And yet to a fly, it smells delicious and appetising.
Are you experiencing that shit as it is? Is the fly? What I am saying, and I believe Donald Hoffman semi agrees, is that the shit really exists, but both I and the fly are experiencing it in ways that make contextual sense for us to experience it. It smells viscerally disgusting to me because it's beneficial for me to be disgusted by it, because I could get sick eating it. It smells delicious to the fly because the fly gets nutritional value from it and doesn't get sick.
So we have our own unique experience of that shit, but really the shit is neither disgusting nor delicious "as it is", it's just a piece of shit.