I too think the book analogy is misplaced here. Books are physical products. They are written by one guy sometimes two but it's super rare. Once it's printed, i

I too think the book analogy is misplaced here. Books are physical products. They are written by one guy sometimes two but it's super rare. Once it's printed, it's done. Customer can't call you up and demand you rip out entire chapters or revive their favorite character which you bastardly left out. Looking at software, it becomes very complicated when you throw multiple engineers. If it's written in a manner where people don't talk to each other for weeks and just showing up with the pieces as if building an oil tanker with prefabricated parts that are put together. Software is much more complicated endeavour and it's fueled by the endless changes that can be made. Nothing is solid or have physical constraints that clearly limit options once the product is out the door, where as software can very easily ebb and flow with changing stakeholders and turnover. 50 shades of grey didn't have multiple authors that came before each other and a group of guys writing it together and readers demanding changes that caters to them.