选题1: When does a “free” product become too expensive?

免费产品何时会变得代价高昂？

Hints: Model attention, data, or time as costs. Consider platform economics, utility trade-offs, and hidden pricing. Can you formalise the idea of “paying with something other than money”?

可将注意力、数据、时间视作成本；结合平台经济学、效用权衡、隐性定价展开思考。请尝试将“以金钱之外的形式付出代价”这一概念进行形式化表述。

选题2: Can a market exist without prices? Design one.

当没有价格存在时，市场是否依然存在？请设计这样一种市场

Hints: Think about allocation through queues, algorithms, reputation, or social norms. What replaces price signals? Would it be efficient or stable?

可思考通过排队、算法、声誉机制、社会规范完成资源配置；思考什么可以替代价格信号？该市场是否具备效率与稳定性？

选题3: If you could rewrite one assumption in a standard economic model, which would you change and why?

若你可以改写标准经济学模型中的一项基本假设，你会选择改写哪一条？原因是什么？

Hints: Perfect rationality? Complete markets? Information? Explore how altering a single assumption reshapes predictions.

完全理性？完全市场？完全信息？探究仅改动单一假设后，会如何重塑经济模型的预测结果。

选题1: Are emotions a market failure or a market feature?

情绪是市场失灵，还是市场特征？

Hints: Consider fear, joy, status, guilt. Do markets exploit emotions, correct them, or depend on them? Link to advertising, finance, or consumer behaviour.

可从恐惧、愉悦、身份地位、愧疚感切入。市场是利用情绪、矫正情绪，还是依赖情绪运行？可结合广告、金融、消费者行为展开分析。

选题2: If an algorithm makes economic decisions for you, who is responsible for the outcome?

若由算法替你做出经济决策，最终结果该由谁负责？

Hints: Consider how individuals delegate decisions, how trust and incentives shape behaviour, and whether this changes our understanding of rationality.

思考个人如何进行决策委托、信任与激励如何影响行为，以及这是否会改变我们对理性的定义。

选题3: Can you design a policy that makes people happier without increasing their income?

能否设计一项政策，在不提高居民收入的前提下提升人们的幸福感？

Hints: Think about behavioural nudges, social comparison, expectations, time use, or mental health. How would you measure success?

可从行为助推、社会比较、心理预期、时间分配、心理健康等角度构思。同时说明应如何衡量这项政策的实施成效。

选题1: Is globalisation reversible, or has the world passed a point of no return?

全球化是否可以逆转，还是世界已然走到无法回头的临界点？

Hints: Supply chains, geopolitics, digital trade, and institutions. What would “deglobalisation” actually look like in practice?

可从供应链、地缘政治、数字贸易与国际制度切入。现实中的 “去全球化” 究竟会呈现何种形态？

选题2: Who really benefits from a weak currency?

弱势货币，真正的受益者是谁

Hints: Go beyond exports. Consider inequality, consumers vs producers, inflation, and political incentives.

不只局限于出口层面，可进一步考虑贫富差距、消费者与生产者的利益分化、通胀水平及政治激励等维度。

选题3: If countries competed for citizens instead of capital, how would the global economy change?

倘若各国转而争夺公民而非争夺资本，全球经济将会发生怎样的变化？

Hints: Think about migration policy, taxation, public goods, and “voting with your feet”

可从移民政策、税收制度、公共产品供给以及 “用脚投票” 机制展开思考。

选题1: Would future generations choose the same climate policies we do today?

后代人也会做出和我们当今一样的气候政策选择吗？

Hints: Discount rates, intergenerational equity, uncertainty, and political incentives. Can we represent future preferences?

结合贴现率、代际公平、不确定性与政治激励思考。我们能否真正代表后代人的偏好？

选题2: Is pollution a failure of markets, governments, or imagination?

污染问题，是市场失灵、政府失灵，还是认知与想象力的局限？

Hints: Externalities, regulation limits, and innovation. Could entirely new systems outperform current approaches?

可从外部性、监管局限、创新机制入手。全新的制度体系是否会优于现有治理方式？

选题3: Should environmentally harmful behaviour be taxed, banned, or socially stigmatised?

对破坏环境的行为，应当征税、明令禁止，还是施以社会舆论约束？

Hints: Compare economic incentives vs cultural change. Which is most effective and why?

对比经济激励与社会文化变革两种路径，分析哪一种效果最佳，并说明原因。