Stories tagged with "complex systems"
Profiting from Scarcity
Posted by Gail the Actuary on June 11, 2009 - 10:03am
Topic: Economics/Finance
Tags: complex systems, diminishing returns, economics, macroeconomics, natural limits, philip henshaw, scarcity [list all tags]
This is a guest post by Philip Henshaw, known on The Oil Drum as pfhenshaw. Phil has a BS in physics and an MFA in architecture. He has been studying the physics of how natural systems change form for 40 years, first interested in the subject by college physics experiments in how all experiments misbehave. Phil's website is www.synapse9.com.
Economic theory is based on the observed regularities of the past. Some are considered as general principles, or “natural laws” that are expected to never change. From a systems view, though, such laws are emergent properties of the complex system they are regularities of, and prone to change as the system changes form.
Growth systems, for example, invariably change form when they climax, but the present laws of economics describe a complex system that has perpetual growth that never changes form. The question is partly how to tell when such changes might be appearing. Complex systems may vary a great deal without indicating a change in the form of the whole system. What would raise the question is finding events of kinds that are not supposed to occur at all. Present evidence points to depletion of necessary resources as the possible cause of the combined food and fuel price spiral of the past decade.
An example of one such economic law is that scarcities are temporary. In theory, self-interest drives people to either find substitutes, added supplies, or to reduce demand as prices rise, and in those ways scarcity is expected to resolve smoothly.
When none of those three things occurs, though, the economy experiences a continuing price spiral with no substitutes or added supplies being found for an extended period. It’s a primary indication that the physical system is at a point of inelasticity, and changing design in some way. Then the old “laws” become misinformation about regularities that no longer exist. This is a brief research note on one example, to raise questions.
The Failure of Networked Systems: The Repercussions of Systematic Risk
Posted by aeldric on October 25, 2008 - 10:40am in The Oil Drum: Australia/New Zealand
Topic: Miscellaneous
Tags: complex systems, networks, original, peak oil [list all tags]
This is an updated story that originally ran in January 2008. David Clarke's warnings about the risks of failure in highly connected systems have proved to be prescient in light of recent events - Big Gav.
There are those among the Peak Oil community who suspect that we could be facing a failure of our interdependent society that may be sudden, profound, and complete. I have repeatedly said that I am not numbered among them. My opinion is that our way of life will have to change significantly, but slowly. I don’t expect to be clubbing anybody with a femur in any foreseeable future. This opinion is on record in both print and electronic media, and I don’t expect to be issuing a retraction any time soon--but a recent event forced me to admit that I may have to hedge a little.

The Failure of Networked Systems
Posted by aeldric on January 6, 2008 - 11:00am in The Oil Drum: Australia/New Zealand
Topic: Miscellaneous
Tags: complex systems, networks, peak oil [list all tags]
There are those among the Peak Oil community who suspect that we could be facing a failure of our interdependent society that may be sudden, profound, and complete. I have repeatedly said that I am not numbered among them. My opinion is that our way of life will have to change significantly, but slowly. I don’t expect to be clubbing anybody with a femur in any foreseeable future. This opinion is on record in both print and electronic media, and I don’t expect to be issuing a retraction any time soon.... but a recent event forced me to admit that I may have to hedge a little.

The World Energy Modeling Project
Posted by Nate Hagens on August 7, 2007 - 12:00am
Topic: Miscellaneous
Tags: complex systems, energy modeling, limits to growth, net energy analysis, systems analysis [list all tags]
The following is a guest post about the need for global energy systems modeling, by ASPO-USA co-founder Dick Lawrence. Mr. Lawrence has a degree in Physics from Rensselaer Polytechnic Institute. After a career at Digital Equipment and Intel he is focusing on the world energy model and starting a solar hot-water business in Massachusetts. In 1986 he read "Beyond Oil" (the original) which was his introduction to resource depletion, Hubbert's peak, and the power of computers to model the behavior of complex systems. In May 2004 he proposed a project to model global energy flow at the ASPO meeting in Berlin.
In the 1980s, Robert Kaufmann co-authored, with 3 others, a study of energy flow through the U.S. economy in Beyond Oil (last updated in 1992). That study was the inspiration for a proposal to model energy flow at the global level, first shown to ASPO members and attendees at the 2004 Berlin conference. After several years of presentations and proposal refinement, a project to model world energy flow is now underway. Modeling teams will develop the North America model (United States, Mexico, and Canada) over the summer of 2007, performing initial model runs in September. They will then expand the scope of the model to the global level, completing development by (approximately) mid-2008.


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