"When I started out, I believed that there were very distinct systems paradigms, and there was a need to choose and defend yours against other people’s paradigms. Today I prefer to see a systems perspective as something that you develop over a lifetime. It’s like building a house that evolves: you can redecorate it, even build an extension."

“I’m basically interested in intervention. The key question for me is: how can you intervene more systemically? Systems approaches make the assumption that things are interconnected. That’s the fundamental starting point. However, we don’t have the privilege of a God’s eye view of that interconnectedness, so there are inevitable limits to understanding, and it is those limits that we call boundaries. So systemic intervention, for me, at a fundamental level, is how to explore those boundaries, and how to take account of the inevitable lack of comprehensiveness and begin to deal with that.”

“It wasn’t so long ago that complexity thinking was synonymous with bottom-up computer simulation. However, in the past 5-10 years we have seen other threads emerge from this mathematically focused starting point that acknowledge the profound philosophical implications of complexity.”