Theory of Change An Essay by Aaron Swartz www.aaronsw.com A theory of change is the opposite of a theory of action — it works backwards from the goal, in concrete steps, to figure out what you can do to achieve it. To develop a theory of change, you need to start at the end and repeatedly ask yourself, “Concretely, how does one achieve that?” changegoals
The Design of Design (Cambridge Engineering Series) A Book by Gordon Clegg www.amazon.com What the problem is
What the problem is Sometimes the problem is to discover what the problem is. The heart of systems engineeringComplete and consistent requirements problemsdesignux