Seeing what's shaping things

The simplest building block. Stocks are things that accumulate - money, trust, knowledge, frustration. Flows are what fills and drains them. Every situation you're navigating has stocks building up and draining away. Once you start seeing stocks and flows, you start seeing why things change at the speed they do - and why some things are so slow to shift.

The engine that drives system behaviour. Reinforcing loops amplify whatever's happening - growth feeds growth, decline feeds decline. Balancing loops push back toward stability. Every pattern you see in a team, organisation, or market is being driven by feedback loops. Learning to spot them is the single most useful skill in systems thinking.

The invisible gap between doing something and seeing what happens. Delays are everywhere - between hiring and productivity, between a policy change and its effects, between planting and harvest. Most bad decisions come from ignoring delays. Most patience comes from understanding them.

The relationships between parts matter more than the parts themselves. A team isn't five people - it's the ten connections between them. An organisation isn't its departments - it's how those departments interact. When you start looking at connections rather than components, the same situation tells a completely different story.

What happens when connected parts interact. The whole behaves in ways none of the parts could produce alone. Culture emerges from interactions. Traffic jams emerge from individual drivers. Market crashes emerge from individual trades. Emergence is why you can understand every part of a system and still be surprised by what the whole does.

The reason proportional thinking leads you astray. In most systems, small causes can have large effects and large causes can have small effects. Doubling the input doesn't double the output. This is why experience in complex systems often feels counterintuitive - the relationships between things aren't straight lines.

Where to focus your attention. In any system, some places are much more effective to intervene than others. A small shift in the right place can change everything. A massive effort in the wrong place can change nothing. Systems thinking is largely the art of finding these points - and having the discipline to work on them rather than on the most visible problem.

The invitation to look deeper. Events are what you notice. Patterns are what you notice repeating. Structures are what's producing the patterns. Mental models are what created the structures. Most of our attention goes to events. Most of the leverage sits below the surface. This model is a reminder - and a practice - to keep asking "what's underneath this?"