I will take a look at the book. But I suspect that won't fully agree because I do believe that continuous progress is theoretically possible. A sound culture would have exponencial improvements in efficiency based on advances in science and technology. This should allow for continuous progress. This couldn't be worldwide, it could only be in nations that maintained a sound culture and kept other cultures out. Of course no current culture comes close, so this is only theoretical. Anyway, I will post again after I read the book.