Comment by TeMPOraL

It doesn't let you recover the text without knowing it in advance, so no.

You can't in particular iterate it sentence by sentence; you're unlikely to go past sentence 2 this way before it starts giving you back it's own ideas.

The whole thing is a sleigh of hand, basically. There's 42% of the book there, in tiny pieces, which you can only identify if you know what you're looking for. The model itself does not.