Scientific responses: benefits, risks and trade-offs

Examine a proposed science-informed response to a contemporary issue and make a justified judgement using evidence plus ethical, environmental, social and economic considerations.

Success criteria

• I can distinguish the issue from the proposed response.
• I can identify intended benefits and unintended consequences.
• I can classify and explain impacts using the four lenses.
• I can identify stakeholders, uncertainty and trade-offs.
• I can write a conditional recommendation supported by evidence.

1. Issue: What problem is being addressed?
2. Response: What scientific or technological action is proposed, and how is it supposed to work?
3. Evidence: What data support effectiveness? What uncertainty or limitations remain?
4. Four lenses: ethical, environmental, social, economic.
5. Stakeholders: who benefits, who pays, who carries risk, whose rights or knowledge are involved?
6. Judgement: recommend, reject or proceed with conditions and monitoring.

Desalination during drought

Scientific benefit: reliable fresh-water production.

Environmental: energy demand and brine/intake impacts on marine ecosystems.

Economic: construction and operating cost.

Social: improved water security and possible effects on household affordability.

Judgement: “Proceed if marine impacts are controlled, energy emissions are reduced where possible and long-term costs are acceptable.”

Teacher prompt: “Which evidence supports the benefit? Which trade-off is not captured by the production data alone?”

• A pest-control method works well but harms a non-target species. Is it scientifically effective? Is it automatically desirable?
• A project creates jobs but damages habitat. Which lenses conflict?
• Why can two communities see the same evidence and choose different responses?
• What does “free, prior and informed consent” add to a bioprospecting case?
• When is staged implementation better than immediate full rollout?

• “If it works scientifically, it is ethically correct.” False — effectiveness and ethics answer different questions.
• “Cheapest is best.” False — hidden long-term, social or environmental costs may matter.
• “One benefit proves the response should proceed.” False — trade-offs and stakeholders must be considered.
• “All stakeholders are affected equally.” False — impacts can be distributed unevenly.

1. Classify: “construction cost” under one lens.
2. Classify: “risk to a culturally significant site” under one or more lenses.
3. Explain why uncertainty can justify monitoring.
4. Write one sentence that weighs a benefit against a cost.

Students receive a novel Australian case with one data table and three stakeholder comments. They identify the response, interpret the evidence, organise impacts by the four lenses, then write a 6–8 sentence recommendation that names the main trade-off and any conditions required.