This by David Dalla Venezia. One of his pictures is used as the cover for Ray Pawson book, Evidence-based Policy: A Realist Perspective (London: SAGE, 2006). I picked it up today to reread some passages. Pawson included some links to Venezia’s work and I saw this. It captures what others have described and what I’ve now come to see myself. I am slimming down my books and papers! Honest.
Venezia’s website is here.
A website for the book is here.