Thanks for that. I found it to be quite fascinating but at the same time somewhat unsettling. The depth of complexity seemed limitless. As though there would be no end to the layers of abstraction one could reason about - and must reason about, if we are to truly understand ourselves.
I think finding it unsettling is actually a good reaction. I think people get too encultured into simplistic views of the world. It's good to recognize how fundamentally deep and strange the universe is with respect to our everyday experience of it, if for nothing more than the sake of perspective.