📚 Case Study Practice for IGCSE CIE Philosophy | IGCSE CIE 哲学：案例分析实战演练
IGCSE CIE Philosophy Paper 2 requires you to apply your critical thinking skills to an unseen stimulus – usually a short passage presenting an argument on a moral, social or philosophical issue. Rather than simply recalling theories, you must dissect reasoning, uncover assumptions, evaluate evidence and construct a balanced, well-structured response. This article takes you through a step-by-step practical guide, culminating in a full case study with a model answer breakdown, so you can see exactly how to move from a raw text to a top-band essay.
IGCSE CIE 哲学试卷二要求你将批判性思维技能运用到一段陌生的材料中——通常是一篇关于道德、社会或哲学议题的短文，呈现某个论证。你不仅要复述理论，更要拆解推理过程、挖掘隐含假设、评估证据，并构建平衡、结构清晰的回答。本文将通过一步步的实战指南，最终以一个完整案例和范例答案分析收尾，让你清楚地看到如何从一段原始文本走向一篇高分文章。
1. Understanding the Demands of a Case Study Question | 理解案例分析题的考查要求
A typical Case Study question asks you to “critically assess the argument presented” or “evaluate the reasoning in the passage.” This means you must go beyond summarising the author’s view. Examiners look for your ability to identify the structure of the argument, weigh its strengths and weaknesses, and relate it to wider philosophical concepts. Marks are awarded for analysis, evaluation and the quality of your own reasoning, not for simply paraphrasing the text.
典型的案例分析题会要求你“批判性地评估文中呈现的论证”或“评价该段落中的推理”。这意味着你不能只是概括作者的观点。考官看重的是你识别论证结构、衡量其优缺点，并将其与更广泛的哲学概念联系起来的能力。分数会给予分析、评价以及你自己推理的质量，而不仅仅是转述文本。
You should approach the stimulus as an invitation to philosophise. Even if you disagree with the conclusion, you must show you understand the logic behind it. The best answers demonstrate intellectual sympathy with the author before exposing where the reasoning falls short. This balanced stance is what distinguishes a grade A from a grade C.
你应该把这份材料视为哲学思考的邀请。即使你不同意其结论，也必须表现出你理解其背后的逻辑。最好的答案会先对作者表现出智识上的共情，再揭示推理的不足之处。这种平衡的姿态正是区分A等和C等答案的关键。
2. Step 1: Read the Stimulus Critically | 步骤一：批判性阅读材料
Your first reading should be slow and interrogative. Do not read the passage simply for information; read it as a detective looking for clues. Underline or mentally note any sentence that seems to be a claim, a reason, or an assumption. Pay special attention to evaluative words like ‘obviously’, ‘clearly’, ‘must’, ‘always’, ‘never’ – these often signal hidden assumptions or exaggerations.
你的第一遍阅读应当是缓慢而充满质疑的。不要在阅读时只获取信息；而要像侦探寻找线索一样阅读。将任何看起来是主张、理由或假设的句子划线或默记。特别留意那些评价性词语，如“显然”“明确”“必须”“总是”“绝不”——这些往往暗示着隐藏的假设或夸大其词。
Distinguish between factual claims and value judgments. For instance, ‘Self-driving cars have caused fewer accidents per mile than human drivers’ is a factual claim that can be checked against statistics. ‘Self-driving cars are morally superior because they eliminate human selfishness’ is a value judgment that rests on debatable premises. Recognising this distinction is the first step towards evaluating the argument’s solidity.
区分事实性主张与价值判断。例如，“自动驾驶汽车每英里造成的事故少于人类驾驶员”是一个可通过统计数据核查的事实性主张。而“自动驾驶汽车在道德上更优越，因为它们消除了人类的自私”则是一个依赖于可争议前提的价值判断。认识到这一区分是评估论证稳固性的第一步。
3. Step 2: Identify Main Arguments and Conclusions | 步骤二：识别主要论点与结论
Once you have annotated the passage, reconstruct the argument in your own words. Ask: What is the conclusion the author wants me to accept? What reasons are offered to support it? Often an argument can be summarised in a simple diagram: Reason 1 + Reason 2 → Conclusion. If the passage contains a counter-argument, note it separately – you can use it later to show balance.
在标注完文段后，用自己的话重构论证。问自己：作者希望我接受的结论是什么？提供了哪些理由来支持它？通常一个论证可以概括为一个简单的图示：理由1 + 理由2 → 结论。如果文段中包含反驳观点，要单独标注——你可以在后面用它来展现平衡性。
For example, a passage arguing that animals should not be used in medical research might claim: ‘Animals can feel pain (Reason 1), and causing pain to sentient beings is wrong (Reason 2). Therefore, using animals in painful experiments is morally unacceptable (Conclusion).’ Extracting this skeleton early keeps your answer focused.
例如，一篇主张不应在医学研究中使用动物的短文可能指出：“动物能感受到疼痛（理由1），而给有知觉的生命制造痛苦是错误的（理由2）。因此，在痛苦的实验中使用动物在道德上是不可接受的（结论）。”尽早提炼出这个骨架能让你的回答始终聚焦。
4. Step 3: Uncover Hidden Assumptions | 步骤三：挖掘隐含假设
Hidden assumptions are the unstated beliefs that must be true for the reasoning to hold. In the animal research example, a crucial assumption is that the moral principle ‘causing pain is wrong’ applies equally to humans and animals, or that the pain animals suffer cannot be outweighed by potential human benefits. Spotting such assumptions is where you earn high evaluation marks.
隐含假设是指那些未明确陈述、但必须成立推理才能成立的信念。在上述动物研究例子中，一个关键假设是“造成痛苦是错误的”这一道德原则同样适用于人与动物，或者动物遭受的痛苦不能被潜在的人类利益所压倒。能发现这类假设，正是你获得高分评价的关键。
To train yourself, always ask: “What must the author also believe?” If a writer says “We should ban smoking in all public places because it harms non-smokers,” an underlying assumption is that the state has the right to restrict individual behaviour to prevent harm to others – a Mill-style harm principle. Pointing out this assumption allows you to discuss whether the principle can be extended consistently.
要训练自己，总是问：“作者还必须相信什么？”如果作者说“我们应该在所有公共场所禁烟，因为这会伤害非吸烟者”，其隐含的假设就是国家有权限制个人行为以防止对他人的伤害——这是一种密尔式的伤害原则。指出这一假设，你就能进而讨论该原则能否被一贯地推展。
5. Step 4: Evaluate Evidence and Examples | 步骤四：评估证据与实例
Authors often use statistics, research findings or anecdotes to strengthen their case. Your job is to test the strength of this evidence. Is the sample size adequate? Is the source credible and impartial? Does the example truly represent the situation, or is it cherry-picked?
作者经常使用统计数据、研究发现或轶事来加强自己的论证。你的任务就是检验这些证据的强度。样本量是否足够？来源是否可信且公正？例子是否真正代表所讨论的情况，还是经过了筛选？
For instance, a passage might claim “Most philosophers agree that free will is an illusion” without citing a recognised survey. You could note that appealing to an unspecified majority is a potential weakness. Similarly, a single emotional anecdote about a victim does not logically prove a general policy should be adopted, no matter how moving the story is.
例如，一段文字可能声称“大多数哲学家同意自由意志是一种幻觉”却没有引用公认的调查。你可以指出，诉诸不特定的多数是一个潜在的弱点。同样，一个关于受害者的煽情轶事，无论多么感人，在逻辑上也不能证明一项普遍政策应当被采纳。
6. Step 5: Detect Logical Fallacies | 步骤五：识别逻辑谬误
Fallacies are errors in reasoning that weaken an argument. Being able to name a fallacy is not enough – you must explain exactly how it makes the reasoning unreliable. Below is a quick reference of common fallacies found in IGCSE Case Studies.
谬误是削弱论证的推理错误。仅仅能说出谬误的名称是不够的——你必须解释它究竟如何使得推理不可靠。下面是一份IGCSE案例分析中常见谬误的快速参考。
| Fallacy (English) | 谬误（中文） | Example / 示例 |
| Ad hominem | 诉诸人身 | ‘You only say that because you are rich.’ / “你这么说只是因为你富有。” |
| Straw man | 稻草人 | Misrepresenting a view to attack it easily. / 歪曲一个观点以便轻易攻击它。 |
| False dichotomy | 虚假二分 | ‘Either you ban all cars or accept air pollution.’ / “要么禁掉所有汽车，要么就接受空气污染。” |
| Hasty generalisation | 以偏概全 | Drawing a conclusion from too few cases. / 从过少的案例得出普遍结论。 |
| Slippery slope | 滑坡论证 | Claiming a small step will inevitably lead to extreme disaster. / 声称一小步将不可避免地导致极端灾难。 |
When you spot a fallacy, do not just label it. Explain: ‘This is a false dichotomy because there is a third option – investing in cleaner technology – which the author ignores.’ Such precision shows genuine evaluative skill.
当你发现一个谬误时，不要只是贴标签。要解释：“这是一个虚假二分，因为还有第三种选择——投资清洁技术——而作者忽略了这一点。”这种精确性展现了真正的评价能力。
7. Step 6: Apply Ethical Theories (If Relevant) | 步骤六：应用伦理理论（如适用）
Many case studies centre on a moral dilemma. Here you can draw on Utilitarianism, Deontology (Kantian ethics), Virtue Ethics, or Situational Ethics to test the author’s position. For instance, if the passage argues for sacrificing one person to save five, a utilitarian would likely agree because it maximises well-being, while a Kantian would reject it because it uses a person merely as a means.
许多案例分析围绕一个道德困境展开。此时你可以借助功利主义、道义论（康德伦理学）、美德伦理学或境遇伦理学来检验作者的立场。例如，如果文段主张牺牲一人以拯救五人，功利主义者很可能同意，因为这样做最大化了福祉；而康德主义者则会拒绝，因为这把人仅仅当作手段。
You do not need to explain an entire theory from scratch. A brief, accurate application is sufficient: ‘From a utilitarian perspective, the author’s recommendation is consistent with the principle of the greatest happiness. However, a weakness is that it fails to respect individual rights, which Kant would see as an absolute moral demand.’ This shows you can link the case to theoretical frameworks.
你不需要从头解释一整条理论。简要而准确地应用就足够了：“从功利主义视角看，作者的建议符合最大幸福原则。然而，一个弱点是它未能尊重个体权利，而康德会视之为绝对的道德要求。”这显示了你能够将案例与理论框架联系起来。
8. Step 7: Construct a Balanced Response | 步骤七：构建平衡的回答
A stellar answer never simply attacks or defends the passage. Structure your response in three clear sections: (1) a brief introduction stating your overall assessment; (2) a paragraph or two explaining strengths – what does the argument get right, and why?; (3) a larger section addressing weaknesses, missing perspectives and counterarguments; and (4) a reasoned conclusion that weighs both sides and states your own judgment with justification.
一篇出色的答案从不单单攻击或辩护文段。将你的回答分为三个清晰的部分：（1）简要引言，说出你的总体评价；（2）一到两段解释其优点——论证正确的地方及原因；（3）一个更长的部分讨论弱点、缺失的视角和反驳；以及（4）一个有理有据的结论，权衡双方，并陈述你自己的判断及其理由。
Use phrases like ‘While the author correctly notes that…’, ‘However, the reasoning overlooks…’, ‘A defender might reply that…’, and ‘Ultimately, the argument succeeds/fails because…’. This signals to the examiner that you are engaging in a philosophical dialogue, not a one-sided critique.
使用“虽然作者正确地指出……”“然而，该推理忽略了……”“辩护者可能会回应说……”“最终，这个论证成功/失败是因为……”等措辞。这向考官表明你正在进行哲学对话，而非单方面的批评。
9. Step 8: Practice Case Study – The Autonomous Vehicle Dilemma | 步骤八：实战案例——自动驾驶汽车困境
Read the following stimulus carefully. It is a condensed version of the kind of passage you might receive in an exam.
仔细阅读以下材料。这是一段你可能在考试中收到的短文浓缩版。
“Autonomous vehicles must be programmed to make split-second decisions in unavoidable accident scenarios. Clearly, the only ethical approach is to minimise total harm. If a car can either hit a group of five pedestrians or swerve and hit one pedestrian, the programming should instruct the car to sacrifice the one to save the five. This is simply common sense. Any other policy would be irrational and result in more deaths. Objections based on the idea that we should not ‘play God’ are irrelevant because the programmer is already choosing a policy; doing nothing still results in deaths. Therefore, governments should mandate harm-minimisation algorithms for all self-driving cars.”
“自动驾驶汽车必须被编程为能够在不可避免的事故场景中做出瞬间决策。显然，唯一合伦理的做法就是将总体伤害降至最低。如果一辆车可以撞向五个行人组成的群体，或者转向撞向一个行人，那么程序就应该指令车辆牺牲那一个人以拯救五个人。这纯粹是常识。任何其他政策都是非理性的，并会导致更多死亡。基于我们不应‘扮演上帝’的反对意见无关紧要，因为程序员已经在选择策略；什么都不做同样会导致死亡。因此，政府应强制要求所有自动驾驶汽车采用伤害最小化算法。”
Before moving to the model answer, use the steps above to analyse this passage. What is the conclusion? What assumption does the author make about the comparability of lives? Is there a fallacy?
在进入范例答案之前，请运用以上步骤分析这段文字。结论是什么？作者对生命的可比较性做了怎样的假设？是否存在谬误？
10. Step 9: Model Answer Breakdown | 步骤九：范例答案分析
Identifying the arguments and conclusion: The conclusion is that governments should mandate harm-minimisation algorithms. The main reason is a utilitarian principle: minimising total harm in unavoidable accidents. The author dismisses the ‘playing God’ objection as irrelevant. Notice the strong tone: ‘clearly’, ‘irrational’, ‘simply common sense’.
识别论点与结论：结论是政府应强制推行伤害最小化算法。主要理由是一条功利主义原则：在不可避免的事故中使总体伤害最小化。作者将“扮演上帝”的反对意见视为无关紧要而加以驳回。注意文中强烈的语气：“显然”“非理性的”“纯粹是常识”。
Uncovering assumptions: The core assumption is that the value of lives is purely quantitative – five lives are always worth more than one. But what if the one is a child and the five are elderly? The author assumes that aggregating lives is morally unproblematic, which many deontologists would challenge. Another assumption is that programmers can reliably predict outcomes in split seconds, which is technically questionable.
挖掘隐含假设：核心假设是生命的价值纯粹是数量性的——五条命总是比一条命更有价值。但如果那一个人是孩子，而五个人是老年人呢？作者假定将生命简单累加在道德上毫无问题，而许多道义论者会质疑这一点。另一个假设是程序员能够在瞬间可靠地预测后果，这在技术上是可质疑的。
Evaluating evidence and examples: The passage offers no empirical evidence – no crash statistics or testing data. It relies entirely on a thought experiment. You could argue that in the real world, a car cannot make such clean ethical judgments, and the ‘minimise harm’ rule might lead to unpredictable consequences, such as deliberately targeting certain individuals.
评估证据与实例：文中没有提供任何经验性证据——没有事故统计数据或测试数据。它完全依赖一个思想实验。你可以指出，在现实世界中，汽车无法做出如此清晰的伦理判断，而且“最小化伤害”规则可能导致无法预见的后果，比如蓄意瞄准某些个体。
Detecting fallacies: The dismissal of the ‘playing God’ objection is arguably a straw man, because serious objections are not about a religious phrase but about the lack of consent and the violation of rights. Additionally, the claim that ‘any other policy would be irrational’ is a false dilemma; perhaps a policy of random choice, or always prioritising passengers, could be defended on different ethical grounds.
识别谬误：对“扮演上帝”反对意见的驳回可以说是一个稻草人谬误，因为严肃的反对意见并非针对一个宗教短语，而是关于缺乏同意和侵犯权利。此外，“任何其他政策都是非理性的”这一主张是一个虚假二分；或许随机选择的政策，或者总是优先保护乘客的政策，可以在不同的伦理基础上得到辩护。
Applying ethical theories: A utilitarian would likely support the author, citing the Greatest Happiness Principle. However, a Kantian would argue that deliberately steering into the single pedestrian treats that person as a mere means to save others, violating the categorical imperative. A virtue ethicist might ask what a wise and compassionate legislator would do, focusing on the character of the decision-maker rather than a rigid rule.
应用伦理理论：功利主义者很可能支持作者，援引最大幸福原则。然而，康德主义者会主张，故意转向撞向那个单独的行人，是把那个人仅仅当作拯救他人的手段，违反了定言律令。美德伦理学家则可能会问，一位明智而富有同情心的立法者会怎么做，从而关注决策者的品格而非僵化的规则。
A balanced conclusion: The author raises a genuine ethical challenge, but the argument is too one-sided. While harm minimisation seems intuitive in simple examples, in practice it faces serious technical and moral obstacles. I would argue that until we have a broader public consensus on the ethical principles for autonomous vehicles, it is premature to mandate a single algorithm. The weakness of the passage is its refusal to engage deeply with competing moral perspectives.
平衡的结论：作者提出了一个真实的伦理挑战，但论证过于片面。尽管在简单例子中伤害最小化看起来符合直觉，但在实践中它面临严重的技术和道德障碍。我认为，在我们就自动驾驶汽车的伦理原则达成更广泛的公众共识之前，强制推行单一算法为时过早。该文段的弱点在于它拒绝深入探讨相互竞争的道德视角。
11. Final Exam Tips | 结语：考试贴士
Practice unpacking a stimulus in 10 minutes: annotate, map the argument, list assumptions, and sketch your evaluation plan. Do not spend too long on describing the passage; evaluation should take up at least two-thirds of your answer. Use the names of theories and fallacies accurately, but always explain how they relate to the text. And remember – the examiners want to see your philosophical voice. Be fair, be precise, and be courageous in your reasoning.
练习在十分钟内拆解一份材料：标注、画出论证图、列出假设，并草拟评价提纲。不要在描述文段上花费过多时间；评价应至少占去你答案的三分之二。准确使用理论和谬误的名称，但始终要解释它们与文本的关联。并且记住——考官希望看到你的哲学声音。要公正、精确，并在推理中展现出勇气。
Published by TutorHao | Philosophy Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
屏轩国际教育cambridge primary/secondary checkpoint, cat4, ukiset,ukcat,igcse,alevel,PAT,STEP,MAT, ibdp,ap,ssat,sat,sat2课程辅导，国外大学本科硕士研究生博士课程论文辅导