There was a large discussion of the same book here: <a href="https://news.ycombinator.com/item?id=26221925" rel="nofollow">https://news.ycombinator.com/item?id=26221925</a>
I just learned that HN hides the word 'penis' in titles. This title initially showed as "shrinking es". It's not an anti-spam feature, because it still submitted just fine.