Barendregt on Consciousness: belief and hypothesis

"This is what I believe: to have consciousness, or rather to be conscious, and in spite of being sure of this, it should be considered as a proper belief, since one cannot formulate exactly what is meant by this, leave alone prove that it is so."

WTF!?

Eric Berne, founder of the bizarre 1960s psychotherapy called Transactional Analysis, had a name for that kind of writing: the Berkeley Subjunctive. "In the extreme case, the title reads, 'Some Introductory Remarks Concerning Factors Involved in Gathering Data Toward a Theory of...'—a very modest title indeed, since it is plain that it will take about two hundred years before the theory itself is ready for publication."

Is there any content on that page, beyond "Uhh, maybe consciousness exists and maybe it doesn't"?

That whole text is beautifully information-free.