Comment by inigyou

Our world exists. Don't overthink it. But dreams aren't real at alll, they just fill in a bare minimum of data and handwave the rest. Which is also what I was getting at with my visual imagination, although the rest isn't handwaved away at all - if I think of an apple on a desk I'm under no illusion there's any more than a ("low res") image of an apple and part of a desk.