WCCS26: World Conference on Complex Systems 20-22nd April

It was good that today I could relax a little sooner than I expected with my presentation delivered over lunch time instead of 1730. To recap, at the 6th edition conference theme of:

“Navigating Contemporary Complexity:
Transdisciplinary Approaches to Economic, Social, Political, and Environmental Challenges”

- my talk (I added "Hodges' model" in the slides):

'Hodges’ model: PRESENTING a UNIVERSAL and SIMPLE CONCEPTUAL WORKBENCH to SITUATE and ENCOMPASS COMPLEXITY'

This after arriving back from a conference dinner near Marrakech at 0100, but the event at Chez Ali was different and most enjoyable. 

I'm conscious that unlike other speakers I (still!) did not have 'data' to share and discuss. Equations have been necessary over the first two days. But overall all sessions have proved accessible. From comments received Hodges' model was understood and deemed relevant. One delegate noted how the visual nature of Hodges' model was apparent, the illustrations revealed the model more clearly than a verbal description the evening before.

There were two questions. I eventually recalled awareness of Franco Basaglia, the Italian pioneer of community mental health and mental health law in Italy. Another questions concerned were I though the arts, drama and culture sit, or fit in Hodges' model? I suggested a search of the blog for posts tagged 'art', 'theatre', or 'culture'; with a warning that it can be a bit of a rabbit-hole.

Discussion, in-sessions and outside have proved refreshing, and not just as a welcome change from 'world news'. There were reminders too of early career researchers, professionals, and policymakers and the need to phone home.

While I pack for a transfer to Marrakech tomorrow afternoon, I will reflect and look to add more here.

In adition to data, I need new angles so I am not self-plagiarizing; hence the attempt to see Hodges' model as a mathematical object.

Many thanks to the WCCS26 Committee for being able to participate and share this model made in the 20th century for the challenges of the 21st.

More to follow and in the meantime, you can read the programme yourself.

'Our broken sticks' c/o Roger Lewin "Complexity: life at the edge of chaos"

Chapter 4 Explosions and Extinctions

  'Is Stu being led astray? I asked. "There's something called the broken stick model in statistics," said Dave. In this trick, a random number generator "breaks'' a stick a hundred inches long at twenty-five points, and produces twenty-six short sticks. Measure them, count the number that are one inch long, the number two inches long, and so on, and draw a histogram. You get a skewed distribution, toward the short end, just like many natural phenomena, including the distribution of sizes of U.S. cities, for instance. "One thing you have to remember about extinctions is that some species are more likely than others to die out, just because they exist as small, isolated populations,'' explained Dave. "This sort of statistical quirk can skew your results, easily." So, you would be suspicious of anything that looks like a power law? "I would, because it's common, just in the nature of statistics. It may tell you that a system is poised at a critical point, whatever that means, but it may not. In any case, when Stu says that the curve he gets from my data is close to a power law, he knows that there are many other mathematical models that could fit equally well."
  Clearly, there were many reasons to be cautious about drawing the conclusion that global ecosystems are poised at the edge of chaos, using just the extinction data.' p.80.

 

Hodges' model: Axes (structure) and Domains (content)

If we take the axes of Hodges' model, and break them at twenty-five points, I wonder what we end-up (or start) with?

 

Lewin, Roger. (1993) Complexity: life at the edge of chaos. London : Phoenix [Dent, 1993] ISBN: 1857990285.

Previously: 'complexity' : 'system'