My approach to what I do in my job — and it might even be the approach to my life — is that everything I do is the most important thing I do. Whether it’s a play or the next film. It is the most important thing. I know it’s not going to be the most important thing, and it might not be close to being the best, but I have to make it the most important thing. That means I will be ambitious with my job and not with my career. That’s a very big difference, because if I’m ambitious with my career, everything I do now is just stepping-stones leading to something — a goal I might never reach, and so everything will be disappointing. But if I make everything important, then eventually it will become a career. Big or small, we don’t know. But at least everything was important.
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?”
The group [of Irwin, Howard, and Wortz]'s thinking here seems to have been influenced to a degree by Christopher Alexander's landmark article, "A City is Not a Tree" (1965)...
Irwin referred specifically to Alexander's argument in his effort to sort out his own thinking about how the Miami International Airport might be designed with both practical and aesthetic concerns in mind, allowing for their overlap and emergence from the conditions on the ground.