SES6020 Chap.2 Systems, Worldviews and Sustainability Models
Systems, Worldviews and Sustainability Models
Read geometry as an argument
Intersecting circles treat environmental, social and economic concerns as equal interests whose overlap marks a solution. Nested models turn an outer system into a constraint on everything inside it.
The chapter shows how the same evidence can produce different decisions when a model permits compensation or treats one loss as non-substitutable.
Identify the protected object
Anthropocentric, biocentric and ecocentric worldviews foreground human wellbeing, living beings and ecosystem integrity respectively. They do not merely supply labels.
Each selects relevant evidence, exposes a different harm and leaves a different question unanswered.
What this chapter covers
- 01
Intersecting systems
- 02
Nested constraints
- 03
Compensation and limits
- 04
Anthropocentrism
- 05
Biocentrism
- 06
Ecocentrism
Worked example · free
Expose three standards in one reservoir decision
- 3Name each protected object.
- 3Select relevant evidence.
- 3Defend one standard for the decision.
Key terms
- Intersecting Model
- A representation treating sustainability domains as equal interests whose overlap marks a solution.
- Nested Model
- A representation placing one system inside another so the outer system acts as a constraint.
- Anthropocentrism
- A worldview assessing environmental decisions primarily through human interests.
- Biocentrism
- A worldview assigning value to living beings beyond their use to people.
- Ecocentrism
- A worldview protecting ecosystem integrity, function and relationships.
Systems, Worldviews and Sustainability Models FAQ
What is wrong with the three-circle model?
It clarifies overlaps but can imply that gains in one domain compensate for any loss in another. It organises consequences without identifying non-substitutable thresholds, which must be supplied by evidence and judgement.
What does nesting add to sustainability analysis?
Nesting states dependence. If society and economy sit inside the environment, ecological capacity constrains their choices. Reversing the order states a different belief, so the outer circle carries the model's strongest argument.
Which worldview is best?
No worldview wins by definition. Choose by the decision's protected object and defend what the perspective reveals, what evidence it requires and what it leaves unanswered rather than treating the labels as automatic verdicts.
How should I compare models without merely describing their diagrams?
Use one contested decision and keep its facts unchanged. For the intersecting-circles model, identify the compromise or overlap the geometry encourages. For nested systems, explain which outer dependency constrains the inner activity. Then state the evidence each representation foregrounds, the interest it can hide and the policy conclusion that might change.
Repeat the exercise for anthropocentrism, biocentrism and ecocentrism by naming the protected object rather than saying one view cares more. A useful revision matrix uses cases as rows and models or worldviews as columns; each cell contains only the governing question and the evidence it prioritises. Draft two conflicting conclusions from the same case and underline the value premise that separates them.
Add who has authority to choose the system boundary and whose interests that choice may exclude. In a timed answer, define the representation, interpret its structure, apply it, expose one blind spot and defend a qualified judgement. If the diagram is removed, the prose must still express the dependency, overlap or hierarchy that did the analytical work.
Exam move
Choose one contested proposal and draw it first as three equal intersecting circles. Under each circle, place the evidence that model foregrounds, then write the compromise the geometry makes tempting. Redraw the same case as nested systems and state which outer boundary now constrains the other interests. The facts must remain unchanged; the exercise works only when geometry causes the different conclusion.
Add a third sketch that places social institutions outside the other domains and explain what that view reveals about allocation and power. After the diagrams, write one paragraph for anthropocentrism, biocentrism and ecocentrism. Each paragraph should name the protected object, the evidence that matters and one question the worldview leaves unanswered. Avoid describing a worldview as caring more or less.
Explain how it changes the standard used to judge the proposal. Practise a comparison in six sentences: a shared decision, the first model's rule, the second model's rule, a factual point both accept, the value judgement separating them and a defended conclusion. Then take the conclusion you prefer and formulate the strongest objection from the model you rejected.
If the objection is easy to dismiss, return to the source geometry and make it stronger. Build an error log around three common failures: listing domains without relating them, treating a diagram as neutral, and choosing a worldview before identifying the decision. For closed-book recall, reproduce both principal geometries and the three worldview definitions in under three minutes.
Spend the remaining time annotating what each permits, forbids and cannot see. A final check is to remove the diagram and read the prose alone. If the relationship among domains disappears, the explanation relied on the picture rather than translating its argument.
