http://thedailywtf.com/articles/the-billable-hour
For every line of code that ends up in software the general public sees or interacts with, for every line in your Snapchats and Battlezone: Call of Honor Duty Warfare, there are a thousand lines of code written to handle a supply chain processing rule that only applies to one warehouse on alternating Thursdays, but changes next month thanks to a union negotiation. Or it’s a software package that keeps track of every scale owned by a company and reminds people to calibrate them. Or a data-pump that pulls records out of one off-the-shelf silo and pushes them into another.