I had to use my credits on Audible.com and didn't know what to buy. This book was on my to read list, but somewhere at the bottom of it. And thanks to very small collection of audiobooks this book jumped the queue.
The first thing that surprised and warned me at the same time how small the book is. It is relatively short and is less than 3 hours long. In comparison the other book I'm reading, "The brain's way of healing", is almost 15 hours long. But there is a good reason why it is like that. Authors intentionally cut on the content as it's the same principle they use at work, which was described in the book.
To sum up the book, it could also be called "Rethink". Rethink things that you are doing at work. Just because something was done in a particular way for a long time does not mean it is a good idea to keep doing it.
The book summarises years of work at 37signal, company which indeed swims agains the flow and decided not to follow many established work practices.
Can't say I've learnt much, as I've heard many of those things before, but nevertheless I've enjoyed this book.