Test drive an implementation using an Executable Specification – revisited

This post is available at http://www.thinkcode.se/blog/2012/09/28/test-drive-an-implementation-using-an-executable-specification-revisited

Want change and is willing to change

This post is available at http://www.thinkcode.se/blog/2012/09/19/want-change-and-is-willing-to-change

Want change but don’t want to change

This post is available at http://www.thinkcode.se/blog/2012/09/03/want-change-but-dont-want-to-change