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Thinking in systems

Donella H. Meadows, Diana Wright

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Chapter 1 · placement unverified

Illustrative model: a tank receives 7 liters per minute and loses 5. Inflow is reduced to 6 while outflow remains 5. What happens to the water stock?
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In an illustrative tank model, which quantity is a stock?
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An illustrative thermostat turns heating on when temperature is below its target and reduces heating as the target is approached. Which feedback pattern does this represent?
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Chapter 2 · placement unverified

Illustrative model: a balance earns a fixed percentage of itself each period, and no money is withdrawn. What makes the modeled growth reinforcing?
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Illustrative inventory model: deliveries take two weeks, but a shop repeatedly orders more each day because its shelf stock is still low. What risk does the delay create?
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Why does identifying a reinforcing growth loop not establish that a system will grow indefinitely?
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Chapter 3 · placement unverified

Which example best illustrates resilience in an original hypothetical system?
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Which hypothetical behavior best illustrates self-organization?
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What is a useful role of hierarchy in Meadows' systems framework?
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