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
Predicted Mean Vote A Definition www.designingbuildings.co.uk The predicted mean vote (PMV) was developed by Povl Ole Fanger at Kansas State University and the Technical University of Denmark as an empirical fit to the human sensation of thermal comfort. It was later adopted as an ISO standard. It predicts the average vote of a large group of people on the a seven-point thermal sensation scale where: +3 = hot +2 = warm +1 = slightly warm 0 = neutral -1 = slightly cool -2 = cool -3 = cold Thermal Delight in ArchitectureObsessed with absolute numbers heatmetrics