Use Edges and Value the Marginal

Definition and orientation

Use Edges and Value the Marginal draws attention to interfaces where systems meet and to contributions made less visible by dominant categories or priorities. Ecological edge can create productive interaction, but more edge is not always better. Social marginality involves power and exclusion, so ‘valuing’ must include voice, rights and protection rather than extraction.

What it guides: the principle helps frame design judgement through questions such as:

• Which interface contains important exchange, tension or neglected evidence?
• What has been made marginal, by whom, and with what consequences?
• Would increasing edge improve function, or increase exposure, disturbance and maintenance?

Origins, lineage and attribution

This wording belongs to David Holmgren’s twelve-principle formulation. Holmgren published the set in 2002 and describes the principles as memorable thinking tools that open different perspectives into whole-systems design. He also states that methods vary with place and situation and that principles do not substitute for practical experience or technical knowledge.

The Academy’s explanation is an attributed teaching interpretation, not a reproduction of Holmgren’s icon or a claim that Mark originated the principle. Other permaculture lineages may organise similar ideas differently.

Ethical and principle context

Diversity supplies differences that meet at edges; Pattern to Details locates interfaces at appropriate scales; Integration can strengthen exchange while Self-Regulation prevents overload. Transects and zone maps help document edges but cannot decide their value by themselves.

Use Earth Care, People Care and Fair Share to test purpose, consequences and distribution. Apply this principle with at least one counter-question, relevant evidence and a named review point. It should influence judgement without becoming a slogan that certifies a preferred decision.

When and how to use it

1. Name the decision, scale, affected people and living systems.
2. Turn the principle into one or more open questions suited to the context.
3. Add a counter-question that could expose harm, urgency, maintenance or a conflicting principle.
4. Use a relevant framework or tool to gather evidence; do not mistake the method for the answer.
5. Choose a proportionate action and state what remains uncertain.
6. Record what evidence or feedback would trigger review, adaptation or stopping.

Application in Mark’s Diploma and at Vila Pinheiro

Design 07 places native hedgerow species in Zone 5 for biodiversity, habitat, windbreaks and beneficial insects, and describes microclimates as opportunities created by subtle terrain shifts. This verifies attention to spatial margins and interfaces in the design. It does not demonstrate later habitat occupancy or increased productivity.

Evidence boundary: this representative connection was checked in Mark D’Cruz, Design 07: Ayurvedic Food Forest, controlled Diploma PDF, PDF pages 17 and 19. The master register also records broader use across Designs 1–10; those additional declarations are not converted here into unverified public case claims.

Limits, critiques and common misuse

• Assuming every boundary is productive or that increasing edge always improves a system.
• Reducing marginalised people to sources of novelty, labour or knowledge.
• Removing core habitat or refuge to maximise interface.
• Calling neglected land empty without investigating existing life, rights and uses.

A principle cannot replace consent, law, site-specific evidence, competent technical advice or accountable maintenance. When principles pull in different directions, make the tension visible rather than selecting only the phrase that supports an existing preference.

Where this material comes from

This page follows Principle 11 in David Holmgren’s twelve-principle formulation, published in Permaculture: Principles and Pathways Beyond Sustainability (2002). Its principal sources are Holmgren’s Essence of Permaculture and the author-led Permaculture Principles publication. Holmgren presents the twelve as connected systems-thinking and design-thinking tools whose expression varies with place and situation. Related phrases and overlapping ideas appear in other permaculture traditions, but this page neither transfers their authorship to Holmgren nor flattens their differences. Mark D’Cruz used and interpreted this principle in his Diploma work; he is not its originator, and the master register records it as LIB-038. The authoritative formulation has been checked against Holmgren’s published explanation. The representative Diploma connection is verified at PDF pages 17 and 19, with proposed actions and outcomes kept explicitly distinct.

Related entries

• How to Use Principles Without Turning Them into RulesPair the principle with evidence, a counter-question and a review point.
• Comparing Permaculture Principle TraditionsKeep Holmgren’s formulation distinct from other principle traditions.
• Principles, Patterns and Systems ThinkingUse several principles together inside whole-systems judgement.
• David Holmgren: Permaculture PrinciplesFollow the author, publication history and wider body of work.
• Site Observation, Sector and Zone AnalysisTurn field observations into mapped, reviewable evidence.
• From Survey to Design at Vila PinheiroSee evidence, constraints and phased choices connected at whole-site scale.
• Comparing Permaculture Principle TraditionsKeep Holmgren’s formulation distinct from other principle traditions.