A field guide to
systems thinking
How things connect. Why they behave the way they do. And where to find the leverage for change.
Browse by theme
Core systems thinking
themes and topics
Systems thinking is a connected discipline. These themes are starting points, not boundaries - most concepts touch several.
Start here
Core building blocks
The foundations everything else builds on. Start here if you're new to systems thinking.
See all building blocks →System behaviours and patterns
What systems actually do over time - the shapes you see when you step back far enough.
Systems archetypes
Recurring patterns that show up across wildly different systems. Once you can name them, you start seeing them everywhere.
Leverage and intervention
Where and how to intervene in a system to create change that sticks.
Complexity and uncertainty
The terrain where traditional planning breaks down and different approaches are needed.
Mental models and ways of seeing
How we think about systems - and the tools that help us see them more clearly.
Resilience, adaptation, and change
How systems survive, adapt, and sometimes transform into something entirely new.
Boundaries, perspectives, and power
Who gets to define the system, what's included, and whose interests are served.
Organisational and social systems
Systems thinking applied to the world of work, institutions, and collective action.
Measurement, signals, and sense
How we know what's happening in a system - and how measurement itself changes what happens.
Design and intervention approaches
Practical frameworks for working with systems, not against them.
Natural and ecological metaphors
Concepts from ecology and biology that illuminate how all systems work.
Human dimensions
The psychological and cognitive aspects of working with - or against - systems.
Guided pathways
How systems show up
in daily life
Each pathway walks you through a set of connected concepts, framed around something you might be noticing in your organisation right now.
Pathway 1
"Why the same issues keep recurring"
When the same pattern keeps showing up despite good work and good intentions.
7 concepts
Pathway 2
"The unintended consequences nobody planned for"
When an action produces effects nobody planned for - sometimes bigger than the original move.
7 concepts
Pathway 3
"There's something underneath this"
When you can feel a pattern at work but can't quite name what's driving it.
8 concepts
Pathway 4
"The numbers say one thing, the room says another"
When what you're measuring and what you're experiencing don't match.
8 concepts
Pathway 5
"Growth is creating its own pressure"
When the things that got you here start working against you.
8 concepts
Pathway 6
"Everyone sees a different picture"
When capable people in the same room are working from different realities.
8 concepts
Pathway 7
"The change keeps sliding back"
When you've understood the pattern but the shift doesn't hold.
8 concepts
Pathway 8
"Seeing what's shaping things"
The place to start. How to notice the systems that are already influencing everything around you.
8 concepts
Explore
Where the threads converge
The concepts that connect to the most others - the ideas at the heart of the network.
Core building blocks
Feedback loops
Reinforcing loops accelerate change, balancing loops resist it - together they drive all system behaviour.
63 connections
Complexity and uncertainty
Complexity vs Complication
A jet engine is complicated - predictable if you understand it. Raising a child is complex - fundamentally unpredictable
31 connections
Mental models and ways of seeing
Mental Models
The invisible assumptions and stories we carry about how the world works
26 connections
Core building blocks
Delays
The gap between doing something and seeing what happens - the source of most bad decisions in systems.
23 connections
Core building blocks
Boundaries
Where you draw the line around a system changes everything you see inside it
22 connections
Leverage and intervention
Leverage Points
The places in a system where a small change can shift everything
20 connections