包智光称科学受制经验盲区 无法证伪自由意志存在

人真的有自由意志吗？ — 蜉蝣天地Meanders

蜉蝣天地Meanders

包智光指出当代科学将现实简化为确定性与随机性属于“路灯下找钥匙”的方法局限，实验科学既无法证实自由意志，亦无依据宣称其绝不可能存在。

AI-assisted summary of 人真的有自由意志吗？ — original source. Check the original for full context.

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Key ideas

  • 现代科学图景将现实归结为确定性因果律与随机过程的组合，但这种框架从根本上挤压了真正的自由意志存在的空间。 (0:00)
  • 天主教神学对全知的理解在历史上曾与物理决定论极为相似，即上帝事先掌握一切细节，进而导致自由意志易被视为单纯的隐喻。 (3:00)
  • 包智光指出，科学受限于自身的认识论闭环与历史假设，既无法彻底跳出外部审视现实，也绝无可能完全证实自由意志的不存在。 (3:00)
  • 借用“路灯下找钥匙”的寓言，包智光警示科学方法论极易陷入一种错觉：误以为经验工具所能照亮的范围就是全部存在的边界。 (3:00)

Detailed notes

## Background 该视频由B站UP主“蜉蝣天地Meanders”于2026年10月22日发布。根据简介，本期内容节选自汉洋与吕东对谈学者包智光（François Barriquand）的完整节目，聚焦于人类是否拥有自由意志的哲学与科学探讨。

## TL;DR 包智光指出，现代科学描述的世界通常被严格的物理决定论与随机性所占据，这让基于天主教或传统哲学视角的真正人类自由意志显得无处安放。然而，正如历史上神学预知论与决定论之间的纠缠，爱因斯坦等科学家虽然在理论上否定自由意志，但在现实生活中仍不得不依靠它。包智光并不试图直接证明自由意志的存在，而是借用在路灯下找钥匙的比喻强调，实证科学的方法论具有局限性，不能因为现有观测工具只能照亮特定规律，就断言光照之外不存在真实的自由选择。

## Atmosphere & style 对话散发着严谨、从容且深沉的思辨气息，充满法式哲学的审慎与温和。学者并没有站在教条或反科学的立场高谈阔论，而是以坦诚、谦逊的姿态剖析科学与神学的认知边界。透过路灯找钥匙这一生动生趣的譬喻，整段交流呈现出一种知性而发人深省的沉静张力，引导听众反思我们对现代科学全知性的盲目推论。

## Bulletin - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 现代科学图景将现实归结为确定性因果律与随机过程的组合，但这种框架从根本上挤压了真正的自由意志存在的空间。 - [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) 天主教神学对全知的理解在历史上曾与物理决定论极为相似，即上帝事先掌握一切细节，进而导致自由意志易被视为单纯的隐喻。 - [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) 包智光指出，科学受限于自身的认识论闭环与历史假设，既无法彻底跳出外部审视现实，也绝无可能完全证实自由意志的不存在。 - [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) 借用“路灯下找钥匙”的寓言，包智光警示科学方法论极易陷入一种错觉：误以为经验工具所能照亮的范围就是全部存在的边界。

## Key takeaways - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 当代物理学往往试图用普遍规律解释全部现实，这些规律主要由确定性机制与随机过程构成。 - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 如果现实仅由必然发生的因果链和纯粹的随机涨落组成，真正的人类自主选择权将无处立足。 - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 从天主教信仰与哲学角度来看，自由绝不仅是“非自主决定的预设”与“非自主发生的偶然”之间的简单混合物。 - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 探讨自由意志的核心目的并非机械地重申宗教教条，而是检验真正的自由在当代科学框架下是否仍具可辩护性。 - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 年轻群体（如十八岁）通常直觉性地视自由为理所当然，关于自由意志真实性的怀疑与危机往往在二十岁左右显现。 - [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) 历史上部分神学观念认为上帝完全知晓所有未来细节，这种预知视角与机械决定论具有极高的相似性。 - [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) 在彻底的决定论立场下，自由往往被降级为日常生活中的实用隐喻，爱因斯坦便是在否定自由意志的同时维持道德生活概念的典型代表。 - [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) 人类目前既无法通过实证科学证明自由意志存在，科学家也同样无法凭借现有手段证明自由意志绝不可能存在。 - [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) 基于数学与逻辑的实验科学身处认识论闭环之中，始终受限于历史假定与方法边界，无法完全超脱于现实之外进行客观鸟瞰。 - [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) “路灯下找钥匙”的比喻揭示了现代实证科学的局限：研究者往往只聚焦于工具能照亮的地方，并误把被照亮的世界当作存在的全部。

## Detailed walkthrough ### [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) Physical Determinism, Randomness, and the Theological Dilemma

The conversation begins with an inquiry into why François Barriquand devoted so much effort to researching the concept of freedom. Barriquand explains that contemporary scientific worldviews often posit that everything in existence obeys fundamental physical laws, which in principle could account for the entirety of reality. Even though no individual scientist has achieved such exhaustive descriptions, it remains widely held that the ultimate laws of nature might describe reality in its totality. Looking at current physics, those laws appear to combine deterministic mechanisms—events bound to happen strictly according to prior conditions—with stochastic processes governed purely by randomness.

```mermaid flowchart TD accTitle: Scientific Determinism vs Genuine Freedom accDescr: A diagram contrasting the reduction of nature into determinism and randomness against the theological concept of human freedom.

subgraph ScientificView["Scientific Description of Reality"] A["Physical Laws"] --> B["Deterministic Processes\n(Fixed outcomes)"] A --> C["Randomness / Stochasticity\n(Chance outcomes)"] end

subgraph FreedomGap["The Dilemma of Choice"] B --> D["No personal agency:\nPredetermined"] C --> E["No personal agency:\nPure chance"] D & E -.-> F["Leaves no room for\nGenuine Human Freedom"] end

subgraph CatholicTheology["Faith & Contemporary Philosophy"] G["Catholic Understanding:\nFreedom exceeds determinism & chance"] G -.->|Tension| F end ```

Under this standard scientific framework, genuine human freedom seems fundamentally squeezed out. From a Catholic perspective, agency cannot merely be a hybrid of things forced upon us by deterministic chains and things that happen arbitrarily through random fluctuations. Barriquand notes that this tension extends far beyond theology into modern philosophy: does genuine freedom exist, or is it an illusion? His intellectual pursuit is not merely to reiterate doctrinal convictions that freedom is real, but to explore whether genuine freedom can remain an acceptable, defensible proposition within contemporary scientific frameworks. When asked how one might explain this to an eighteen-year-old student, Barriquand remarks that younger people usually take their freedom for granted without agonizing over it; the skepticism typically takes root later in life, around the age of twenty.

- Barriquand highlights the conceptual conflict between standard physics and theological agency: “Because of it, for the Catholic faith, the human freedom should be more than just a mixture of something that we don't choose because it is predetermined, and something that we also don't choose because it just comes out randomly.” - The core philosophical query remains whether the reality of authentic agency can be reconciled with scientific worldviews rather than being instantly dismissed as pre-scientific sentimentality.

[03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) Foreknowledge, Theological Determinism, and the Streetlight Analogy

Addressing whether denying freedom also entails denying the existence of God, Barriquand admits that non-existence of freedom is an open possibility, but clarifies that historically, theological views on divine foreknowledge were surprisingly similar to mechanistic determinism. Many Catholic theologians believed God knows the entire future in advance down to the smallest detail. Consequently, some thinkers found it easy to accept that if God possesses complete foreknowledge, science might in principle mirror that predictive power. Under such a deterministic stance, freedom becomes merely a convenient existential metaphor. Barriquand points to Albert Einstein as an example of someone who explicitly rejected the reality of free will yet continued utilizing the concept in daily moral and existential life.

Barriquand acknowledges that he possesses no definitive proof that free will exists, nor does he pretend to have one. Instead, his philosophical inquiry aims at the reverse assertion: scientists cannot claim with absolute certainty that freedom is impossible. Experimental science, armed with mathematics and logic, operates inside what Barriquand characterizes as an inescapable epistemological circle where observations and hypotheses are continuously bounded by historical assumptions and methodological constraints. Science cannot grasp reality completely from the outside. To illustrate this limitation, he recounts a classic parable of a person searching for lost keys at night:

> A person is searching for something under the glow of a street lamp. A friend walks up and asks, "What are you looking for?" The person answers, "I'm looking for my keys." The friend asks, "Did you lose them here?" To which the person replies, "No, but that's where I can see something; that is where I can hope to find something."

Barriquand suggests that modern scientific methodologies risk making the exact same error: researchers direct their attention strictly where empirical instruments cast light, gradually falling into the illusion that what falls inside that illuminated circle represents the totality of existence. Science, by its very methodology, lacks the means to prove that there is nothing beyond the patch of light it examines.

- Barriquand stresses his own investigative stance and limits of proof: “There is no way to prove that freedom exists, and I have no pretension to be able to prove that it exists as well.” - He characterizes the epistemic trap of over-relying solely on what current experimental methods can illuminate: “We have light somewhere, we follow the light, and then we have the impression that what is covered by light is everything.”

## Notable quotes > [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) We have light somewhere, we follow the light, and then we have the impression that what is covered by light is everything. — François Barriquand

> [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) For the Catholic faith, the human freedom should be more than just a mixture of something that we don't choose because it is predetermined, and something that we also don't choose because it just comes out randomly. — François Barriquand

> [03:00](https://www.bilibili.com/video/BV1itn16VEm1?t=180s) There is no way to prove that freedom exists, and I have no pretension to be able to prove that it exists as well. — François Barriquand

## Mentioned François Barriquand, 汉洋, 吕东, Albert Einstein

## Video description 本期视频节选自汉洋和吕东对谈包智光 François Barriquand 的完整节目

[Source](https://www.bilibili.com/video/BV1itn16VEm1)

中文简报

包智光称科学受制经验盲区 无法证伪自由意志存在 包智光指出当代科学将现实简化为确定性与随机性属于“路灯下找钥匙”的方法局限，实验科学既无法证实自由意志，亦无依据宣称其绝不可能存在。 包智光指出，现代科学描述的世界通常被严格的物理决定论与随机性所占据，这让基于天主教或传统哲学视角的真正人类自由意志显得无处安放。然而，正如历史上神学预知论与决定论之间的纠缠，爱因斯坦等科学家虽然在理论上否定自由意志，但在现实生活中仍不得不依靠它。包智光并不试图直接证明自由意志的存在，而是借用在路灯下找钥匙的比喻强调，实证科学的方法论具有局限性，不能因为现有观测工具只能照亮特定规律，就断言光照之外不存在真实的自由选择。 现代科学图景将现实归结为确定性因果律与随机过程的组合，但这种框架从根本上挤压了真正的自由意志存在的空间。 (0:00) 天主教神学对全知的理解在历史上曾与物理决定论极为相似，即上帝事先掌握一切细节，进而导致自由意志易被视为单纯的隐喻。 (3:00) 包智光指出，科学受限于自身的认识论闭环与历史假设，既无法彻底跳出外部审视现实，也绝无可能完全证实自由意志的不存在。 (3:00) 借用“路灯下找钥匙”的寓言，包智光警示科学方法论极易陷入一种错觉：误以为经验工具所能照亮的范围就是全部存在的边界。 (3:00)

Reading summary

François Barriquand argues that while contemporary science models reality through determinism and randomness—leaving no room for authentic agency—empirical methodology is inherently bounded and cannot definitively rule out human freedom. The Conflict Between Physics and Genuine Agency (0:00) Contemporary scientific worldviews describe reality through physical laws that combine deterministic chains, where outcomes are fixed by prior conditions, with stochastic processes governed purely by chance. Barriquand highlights that this framework fundamentally squeezes out human agency, as a person cannot be genuinely free if their choices are merely forced by pre-existing causes or dictated by random fluctuations. From both Catholic theological and philosophical perspectives, authentic freedom requires more than a compromise between predetermination and randomness. Barriquand seeks to examine whether genuine human agency can remain a defensible proposition alongside modern scientific worldviews, observing that while younger people around age eighteen take freedom for granted, skepticism typically develops in their twenties. Theological Foreknowledge and Practical Metaphors of Choice (3:00) Denying freedom does not necessarily entail rejecting God. Barriquand notes that historical theological conceptions of divine foreknowledge closely mirrored mechanistic determinism, with theologians positing that God knows the entire future down to the smallest detail. In both theological determinism and strict scientific determinism, human freedom is reduced to a practical metaphor rather than an objective reality. He cites Albert Einstein as a thinker who explicitly denied the existence of free will yet continued to rely on the concept to navigate daily moral and existential life. Epistemological Boundaries and the Streetlight Parable (3:00) Barriquand acknowledges that he has no proof that free will exists, but argues that scientists likewise cannot prove it is impossible. Experimental science operates within an inescapable epistemological circle governed by historical assumptions, mathematics, and logic, meaning it cannot observe reality comprehensively from the outside. To illustrate this constraint, Barriquand cites the parable of a person searching for lost keys under a streetlight simply because light shines there, not because the keys were dropped there. He warns that science risks committing the same error: researchers focus strictly where empirical instruments can illuminate phenomena, mistaking what falls inside their methodological field of vision for the totality of reality. Barriquand does not claim to resolve whether free will objectively exists. Instead, he identifies an unresolved epistemological boundary, arguing that because science cannot access reality from the outside, researchers cannot definitively dismiss human freedom merely because it falls beyond the reach of empirical measurement.

精炼阅读摘要

弗朗索瓦·巴里康（François Barriquand）提出，尽管当代科学世界观倾向于将全部现实归结为因果决定论与随机过程的结合，从而挤压了自主选择的空间，但科学认识论本身存在内在局限，无法在绝对意义上证明自由意志纯属虚构。 决定论与随机性对自由意志的挤压 (0:00) 巴里康指出，当代主流科学世界观常预设万物均遵循基础物理定律，并认为这些定律原则上有能力完整解释整体现实。在现有物理学描述中，自然法则主要由两类机制构成：一类是根据既有条件产生确定结果的决定论因果链条；另一类则是纯粹由偶发性主导的随机过程。然而，这种框架给“真正的人类自由”带来的理论困境在于，无论是被前置条件强制决定的行为，还是因随机涨落而产生的不可控事件，都无法构成具有自主能动性的选择。 在天主教信仰与现当代哲学的讨论中，人类自由被认为应当超越“因被预先决定而无法选择”以及“因纯属偶然发生而无法选择”的二元混合物。巴里康的研究重点并非单纯重复宗教教义中关于自由真实的信念，而是试图探讨在当代科学认知框架内，承认真实自由的存在是否仍能构成一个在理论上站得住脚、可辩护的合理命题。他提到，对于大约18岁的年轻人而言，自由通常被视为理所当然的日常经验，但针对自由意志的怀疑论往往会在20岁左右逐渐生根发芽。 神学全知论与爱因斯坦的决定论立场 (3:00) 在探讨否定自由是否等同于否定神的存在时，巴里康认为自由的不存在确实是一个开放性的理论可能，但历史上许多神学观念对“神的预知”的理解与机械决定论具有惊人的相似性。部分天主教神学家主张神能预先知晓关于未来的每一项微小细节，这使得部分学者认为，若全知是确立的，科学原则上也可以具备类似的预测力，而在此类彻底的决定论立场下，自由意志往往沦为一种便于日常生活的存在主义隐喻。 巴里康以物理学家阿尔伯特·爱因斯坦（Albert Einstein）为例说明这种思维模式：爱因斯坦在哲学上明确否定自由意志的真实性，但在个人的道德判断与日常实际生活之中，他依然持续借助自由意志的概念来维持伦理与生存秩序，展现了决定论哲学与日常能动性感知之间的割裂。 路灯寓言与经验科学的认识论闭环 (3:00) 针对证明难题，巴里康坦言自己既无法提供自由意志真实存在的终极证据，也无意宣称掌握了此项证明；但相对地，科学家同样无法确凿地断言“自由必然不可能存在”。他分析认为，依赖数学与逻辑工具的经验科学始终运转于一个无法逃脱的认识论闭环之内，其观察与假设持续受到历史预设以及方法论手段的限制，无法跳脱到外部去全景式地把握现实整体。 为了解释经验方法的界限，巴里康引用了经典的“夜间在路灯下找钥匙”寓言：一个人在路灯的光圈下翻找钥匙，即便钥匙丢失在黑暗处，他也只在光圈下搜寻，因为唯有在被照亮的地方他才能看清事物。巴里康警示，现代科学方法论面临同样的误区，即研究者只在经验仪器能够照亮的研究领域探索，久而久之容易产生一种错觉，误将光圈所及的测量范围等同于现实的全部；然而，科学方法本身的性质决定了它根本无法证明在光圈之外一无所有。 巴里康的论证表明，科学将世界归约为决定论机制与随机分布的做法，仅代表其方法论能够投射光芒的认知局部，而不能构成否定人类真实自主性的终极证据；自由意志在科学时代的真伪问题，依然是一个无法被经验测量完全封闭的开放性哲学议题。

Detailed notes — zh

## Background 该视频由哔哩哔哩（Bilibili）频道“蜉蝣天地Meanders”于2026年10月22日发布。视频内容节选自汉洋与吕东对谈学者包智光（François Barriquand）的完整节目，围绕“人是否真的拥有自由意志”这一哲学与科学议题展开探讨。 ## TL;DR 包智光指出，现代科学规律往往被归结为决定论与随机性的混合，这两者都挤压了真正自由意志的存在空间。他坦言自己无意在实证层面去证明自由的存在，但强调从科学角度同样无法断言自由绝对不存在。科学研究受限于其自身的方法论与“认识论循环”，正如同在路灯下寻找在黑暗中遗失的钥匙——被科学之光照亮的局部并不能代表现实的全部。 ## Atmosphere & style 对谈沉稳、思辨且富有启发性，学者以温和幽默的口吻剖析严肃的哲学与神学命题。没有生硬的理论灌输，而是通过“路灯下找钥匙”等生动的隐喻抽丝剥茧，引导听众在科学决定论的冷峻与人类体验的温度之间重新审视自由的意义。 ## Bulletin - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 现代物理学将世界归结为决定论与随机性的混合，这在逻辑上挤压了人类“自主选择”的空间，使自由意志的立足点面临科学挑战。 - [02:30](https://www.bilibili.com/video/BV1itn16VEm1?t=150s) 包智光指出，天主教神学史上的“上帝预知一切”与极端科学决定论具有相似的预知逻辑，自由在某些视角下可能只是一个“有用的概念”。 - [05:00](https://www.bilibili.com/video/BV1itn16VEm1?t=300s) 科学无法彻底证伪自由意志，因为科学研究受限于“认识论循环”，其方法论如同“路灯下的钥匙”，只能在照亮的局部寻找答案。 ## Key takeaways - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 包智光的研究旨在探讨，在当代科学规律的框架下，对自由意志的信念是否依然是一个合理的选项。 - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 当代科学认为万物演化遵循物理规律，而这些规律本质上是由决定论过程和随机性过程混合而成的。 - [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 天主教信仰中的自由，绝非“无法选择的决定性因素”与“同样无法选择的随机性因素”的简单混合物。 - [02:30](https://www.bilibili.com/video/BV1itn16VEm1?t=150s) 对于18岁左右的极年轻群体而言，关于自由的怀疑和困惑往往尚未出现，这些困惑通常在20岁左右才开始显现。 - [02:30](https://www.bilibili.com/video/BV1itn16VEm1?t=150s) 包智光大方承认了一种开放的可能性，即自由意志在客观上可能根本不存在。 - [02:30](https://www.bilibili.com/video/BV1itn16VEm1?t=150s) 在天主教神学史上，许多神学家认为上帝预知未来的一切，这与科学在理论上预知一切的决定论视角高度相似。 - [02:30](https://www.bilibili.com/video/BV1itn16VEm1?t=150s) 爱因斯坦不相信真正的自由意志存在，但他依然在日常生活中将“自由”作为一个在存在主义层面上实用的概念来使用。 - [02:30](https://www.bilibili.com/video/BV1itn16VEm1?t=150s) 包智光坦言自由意志的存在是无法被证明的，他的哲学研究核心在于表明科学同样无法断言“自由绝对不存在”。 - [05:00](https://www.bilibili.com/video/BV1itn16VEm1?t=300s) 现代实验科学在逻辑和数学工具的辅助下，因其方法论的局限而无法彻底否定自由意志的存在。 - [05:00](https://www.bilibili.com/video/BV1itn16VEm1?t=300s) 人类在进行科学探索时，始终处于“认识论循环”之中，无法跳出这个循环去观察现实世界的整体。 - [05:00](https://www.bilibili.com/video/BV1itn16VEm1?t=300s) 包智光用“在路灯下寻找在黑暗中丢失的钥匙”这一经典笑话，生动地隐喻了现代科学方法论的局限性。 - [05:00](https://www.bilibili.com/video/BV1itn16VEm1?t=300s) 科学方法在某些地方点亮了光芒，但容易让人们产生“被光照亮的地方就是现实全部”的认知错觉，而科学本身无法阻止这种错觉。 ## Detailed walkthrough ### [00:00](https://www.bilibili.com/video/BV1itn16VEm1?t=0s) 自由意志与物理规律的张力 包智光（François Barriquand）解释了他为何对“自由”这一课题深感兴趣。在当代，相当一部分科学家认为，世间万物的演化都遵循着物理规律。在原则上，这些终极的自然规律——即便人类可能永远无法完全发现它们——能够完整地描述整个现实世界。然而，如果我们审视目前所知的科学规律，会发现它们无外乎是由两种机制混合而成的：一种是决定论式的过程（即事物必须以预先确定的方式发生），另一种则是由随机性主导的过程。 如果这种对现实世界的科学描述是正确的，那么人类的自由就失去了立足之地。因为在天主教信仰的理解中，人类的自由绝不仅仅是某种“我们无法选择的决定性因素”与“我们同样无法选择的随机性因素”的混合物。包智光指出：“所以我认为，对于当代哲学——不仅是神学，而且是关于自由的问题——这是一个非常深刻的问题：它到底存在，还是不存在？”因此，他不仅希望从天主教信仰的角度（该信仰坚信真实自由的存在）来研究这个问题，更试图去探寻这种对自由的信念，对于当代的科学家而言是否也是一个可以接受的合理选项。 - **决定论与随机性的困境**：如果世界完全由预先设定的物理定律和随机事件主导，那么人类的每一个选择要么是注定的，要么是随机的，这两种情况都排除了真正的“自主选择”。 - **研究的出发点**：并非要向科学家强行灌输神学观点，而是试图在科学方法论的框架内，为自由意志保留一份合理的可能性。 ### [02:30](https://www.bilibili.com/video/BV1itn16VEm1?t=150s) 无法被证伪的自由与上帝的预知 当被问及如何向年轻人解释自由意志时，包智光幽默地表示，对于18岁左右的极年轻群体而言，他们其实不需要太多解释，因为关于自由的怀疑和困惑往往在更晚的时候才会出现，比如到了20岁左右。在探讨中，他首先大方地承认了一种开放的可能性——即自由意志可能根本不存在。如果自由不存在，是否也意味着上帝不存在？包智光解释说，其实在天主教神学史上，许多神学家对上帝的理解是“上帝预知未来的一切，绝对是所有的一切”。 在这种视角下，如果上帝能够预知一切，那么科学在理论上或许也能预知一切。我们在这个世界上所体验到的自由，可能只是一种在存在主义层面上“有用的概念”。包智光提到，这或许正是爱因斯坦对自由的看法——爱因斯坦不相信真正的自由意志存在，但他依然在日常生活中使用这个概念。包智光坦言：“根本无法证明自由的存在，我也没有任何企图去证明它的存在。”他所做的哲学研究，其核心目的在于表明：从科学的角度来看，同样无法断言“自由绝对不存在”。 - **上帝的预知与科学的预知**：历史上的部分神学观点与极端的科学决定论有相似之处，都认为未来是完全可预测的。 - **爱因斯坦的态度**：否认客观上的自由意志，但在实用主义和存在主义层面上保留“自由”这一概念的使用。 ### [05:00](https://www.bilibili.com/video/BV1itn16VEm1?t=300s) 认识论循环与“路灯下的钥匙” 科学之所以无法彻底否定自由意志的存在，根源于现代实验科学（无论是物理、化学还是生物学）在逻辑和数学工具辅助下的方法论局限。包智光指出，人类在进行科学探索时，实际上总是处于一种“认识论循环”（Epistemological Circle）之中，我们永远无法跳出这个循环去观察。我们所说、所做的一切，都依赖于前人所奠定的基础，在科学或实验层面上，我们根本无法抓住现实世界的整体。 为了生动地说明这一点，包智光讲了一个经典的笑话： > 有一天，一个人在路灯的光柱下弯着腰寻找东西。他的朋友走过来问：“你在找什么呢？” > 他回答说：“我在找我的钥匙。” > 朋友又问：“你是在这儿把钥匙丢的吗？” > 他却说：“不，但只有这儿有光，我才有可能看得到。” 这个行为看似荒唐，但包智光认为，现代科学方法在某种程度上正在引导我们做同样的事情。科学在某些地方点亮了光芒，我们便追随这些光芒，进而产生了一种错觉。包智光总结道：“然后我们就会产生一种错觉，以为被光照亮的地方就是一切。但这是真的吗？我认为科学根本没有办法阻止这种错觉。” ```mermaid flowchart TD accTitle: 科学方法的“路灯隐喻” accDescr: 展示科学研究如何受限于其方法论的照明范围，从而忽略了黑暗中的其他现实。 subgraph Reality["现实的整体 (The Entirety of Reality)"] A["已知且可测的领域<br>(被科学之光照亮)"] B["未知的领域<br>(如自由意志、意识本质)"] end C["科学实验与方法论<br>(提供局部的‘路灯光源’)"] --> A A --> D["科学家在此寻找答案<br>(如决定论与随机性)"] D --> E["产生错觉：<br>‘光照之外皆不存在’"] style B fill:#333,stroke:#666,stroke-width:2px,color:#fff style E fill:#f9f,stroke:#333,stroke-width:2px ``` - **认识论循环**：科学研究的工具和方法决定了其研究的边界，科学家只能在自己设定的框架内寻找证据。 - **科学的盲区**：科学方法无法直接测量或证伪的领域（如真正的自由意志），往往被简单地排除在“现实”之外，这正如在路灯下寻找在黑暗中丢失的钥匙。 ## Notable quotes > [02:30](https://www.bilibili.com/video/BV1itn16VEm1?t=150s) 根本无法证明自由的存在，我也没有任何企图去证明它的存在。 — 包智光 ## Mentioned 包智光, François Barriquand, 汉洋, 吕东, 爱因斯坦, 蜉蝣天地Meanders ## Video description 本期视频节选自汉洋和吕东对谈包智光 François Barriquand 的完整节目 [Source](https://www.bilibili.com/video/BV1itn16VEm1)

Source quotes

[2:30] 包智光: 根本无法证明自由的存在，我也没有任何企图去证明它的存在。

Source quotes

[3:00] François Barriquand: We have light somewhere, we follow the light, and then we have the impression that what is covered by light is everything. [0:00] François Barriquand: For the Catholic faith, the human freedom should be more than just a mixture of something that we don't choose because it is predetermined, and something that we also don't choose because it just comes out randomly. [3:00] François Barriquand: There is no way to prove that freedom exists, and I have no pretension to be able to prove that it exists as well.

Original transcript

[0:00] So you take a lot of time to study about freedom. Why this topic attracted you a lot? Yeah, nowadays, quite a few scientists believe that The world The evolution of the world thinks everything in the world obeys physical laws. In principle, Describe it. everything, the entire reality. Of course, no scientist can describe it himself. in detail. But it is not unreasonable to think that Perhaps. The ultimate laws of nature. All right. even if maybe we will never discover them. Right? If they exist... that maybe they can Right. Describe. Yeah. Reality. in its entirety. If we look at the laws that we know now, maybe they are made of a mixture of deterministic processes. So things that must-- that must happen in a predetermined way R.A.D. for another part. You are determined by randomness. But if this description of the reality is correct, Then there is no place for-- for human freedom, as... as the Catholic faith, understand it. Understands. Because of it. for the Catholic faith, the human freedom should be more than just a mixture of something that we don't choose. because it is predetermined, and something that we also don't choose because it just comes out randomly. either like this or like that. So I think that this is a very deep question for the contemporary philosophy. not only theology, but Question of freedom. Does it exist? Not. So I was interested to study this question. But I was also interested to study, not only from the point of view of-- of the Catholic faith. Because the point of view of the contact space is that this realm exists. A genuine freedom exists. but to try to see whether This belief. can be Consider yourself. The acceptable possibility. for contemporary scientists. So How do we explain freedom to like... The 18-year-old student. Oh. For very young people, I think they don't need so much explanation. The doubts we have or the questions for... Most people, they come later. OK, so how-- When we are 20, maybe. Yeah, how do we expand to the 20? Or how do we expand freedom to both of us? First, I would-- recognize that It is an open possibility that no freedom exists. It is a possibility. That means if there is no freedom exists, it's also God not exists. Yes, although some people Some people have such an understanding of God that they think that God knows everything in advance. Absolutely everything. And even in the Catholic Church, in the history of Catholic theology, A lot of theologians had this view of God, actually. Maybe they would have tended to accept the view that if God can know everything in advance, then maybe science can know everything in advance too. And freedom as we experience it in our world. that existential lives still remains a useful concept. Maybe that's how Einstein would have considered it. He believed that genuine freedom does not exist. But yet he continued to use this concept. There is no way to prove. that Thank you. Freedom exists. Uh-huh. And I have no pretension to be able to prove. that it exists as well. What I've tried to do in my research about freedom from a philosophy point of view is [5:00] that It is also not possible. from a scientific point of view. Two, uh... to pretend that we know for sure That's... No, freedom can exist. Thank you. Why? Because due to the methodology, of experimental science as we practice it today. in physics or chemistry or biology anymore. with a lot of logic and mathematics. as a tool. Don, in fact, we-- We are always are located ourselves in some kind of epistemological circle. We are never outside a circle. What we say, what we do, depends on what others let's say, before us. And there is no way to grasp. as scientifically speaking or experimentally speaking, Yeah, I'm tired. of reality. And to learn to be sure. that when we do that-- We are not intact. and restricting our knowledge to to an area which we can know. I refer to a kind of joke. And one day he... She is looking for something under at the under the light of a lamb. And a friend comes to him and says, what are you looking for? He says, I'm looking for my keys. Did you lose them here? He says, no, but that's where I can see something. where I can hope to find something. So of course, that's crazy. But we may wonder. Well, I think. whether to some extent the scientific method is not sometimes leading us to do just the same. that we have light somewhere, we follow the light. And then we have the impression that what is covered by light is everything. But is that true? Thank you. I think that Science cannot has no way to prevent it.