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 evolution of devices All the first antecedents of man's devices were given him by Nature. Every one of his devices is traceable back to something in nature which suggested the first remote and primitive beginnings of its evolution. And every feature in art that man's mind conceived is conceived by a mind that has evolved as a part of nature: that grew out of nature. The evolution of devices is as much a natural process as the evolution of organisms. David Pye, The Nature and Aesthetics of Design The Evolution of Useful Things creativity