It is conjectured that we are at an historic watershed when people will stop thinking of the big bang as the Beginning of time or our universe, but will see it as a step along the way. The frontiers of science---what we can model and test---are being pushed back to conditions prior to the onset of the current expansion. Carlo Rovelli had some enlightening things to say about this a year ago in the issue of Nature Physics that published Bojowalds paper on before the big bang. So is this conjecture right? How do we tell? Are we at a point in human intellectual history when people will start imagining the universe as extending back in time before the bang? The question is not about what is ultimately scientifically correct but about prevailing ideas. One simple test will be to see how this book does on the market: http://www.amazon.com/Beyond-Big-Bang-Prospects-Collection/dp/3540714227/ The title is Beyond the Big Bang, it officially goes on sale July 1, and the current salesrank is 2.6 million. I see no evidence that the book will be promoted in any way. It is aimed at the academic market. As such it would not be surprising for the salesrank to stay around 1 million. A rank of 100,000 would be a surprisingly good performance, and would I believe signal a new awareness of pre-bang cosmology in the general public. What do you think the sales rank of this book will be on 7 July, a week after it goes on sale? I plan to check at noon pacific time.