See From Form to Formlessness at From Form to Formlessness
and scroll down to the experiments dialogs. Play with it. They are increadably similar to what Steve talks of related to Subjective Reality, especially the dialogs towards the end on consiousness. Joel uses the words FORM and FORMLESS but you will see the similarity, i.e. Form = Objective Reality. You can actually follow along in your own mind or use something in your immediate environment as you read through and do the experiments yourself.
It would be neat if Steve could/would do something similar but over the web.