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System maps are useful in the following ways:
• We understand the complexity, as it demonstrates how numerous factors and feedback

loops contribute to a situation.
• It uncovers root causes by highlighting the deeper issues behind superficial problems.
• They recognise the minor adjustments that can result in substantial improvement.
• Mapping indicates how a change in one part might negatively impact another part.
• Stakeholders and teams achieve a shared visual understanding.

Creating and Using a Systems Map

The steps to apply systems map are as follows:

Step 1: Identify the key issue
and list all influencing More Smoking
factors (elements).
Step 2: Draw arrows to represent Smoking

how these elements
Cancer More Lung
affect each other. Damage
Step 3: Use “+” and “–” signs to Lung
Damage
indicate the nature of
influence.
Step 4: Highlight feedback loops to identify repeating cycles.

Step 5: Identify leverage points—areas where change can have the greatest positive impact.
Let us understand the concept of system map with the help of example.

System Map: Smoking–Lung Damage–Cancer

Purpose:
This system map shows how smoking can lead to lung damage and eventually to cancer. It also

shows how these health issues can influence each other over time through feedback loops.
Key elements in the system
• Smoking: A harmful habit that introduces toxic chemicals into the lungs.

• Lung damage: Harm caused to lung tissues due to prolonged smoking.
• Cancer: A serious disease that can develop as a result of ongoing lung damage.

• More smoking: The behaviour of continuing or increasing smoking.
• More lung damage: Worsening condition of lungs due to smoking and cancer progression.

How the Elements Are Connected (Cause and Effect)?
• Smoking → Lung damage (+): The more a person smokes, the more damage happens to
their lungs.

• Lung damage → Cancer (+): Damaged lungs are more likely to develop cancer cells over time.

Introduction to Systems Thinking and System Map 77