My edition is copyright 1993. In Chapter 21.3, they cite Capers Jones 1977 "Program Quality and Programmer Productivity". (Couldn't find a handy link online, ap

My edition is copyright 1993. In Chapter 21.3, they cite Capers Jones 1977 "Program Quality and Programmer Productivity". (Couldn't find a handy link online, appears to be http://www.amazon.com/Program-quality-programmer-productivity-Technical/dp/B0006XJJ80 http://www.amazon.com/Program-quality-programmer-productivit...) They report the following table Project Size (LoC) Error Density (Bugs / kLoC) 0-2k 0-25 2k-16k 0-40 16k-64k 0.5-50 64k-512k 2-70 512k or more 4-100 So yes, the error density increases with LoC.