cover of episode Episode 96: Kenneth Stanley on the Pursuit of What’s Interesting

Episode 96: Kenneth Stanley on the Pursuit of What’s Interesting

2024/10/29
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Kenneth Stanley: 本书的核心观点是,在复杂系统中,追求预定义的目标可能会适得其反。相反,无论是在机器学习、商业、科学、教育还是艺术领域,我们都应该追求有趣的事物。正是这种对新颖性的探索,在好奇心的驱动下,才产生了创新和开放式知识的创造。 Stanley 详细阐述了目标悖论,指出在复杂空间中,目标常常具有欺骗性,导致人们看似在朝着目标前进,实际上却偏离了方向,最终陷入死胡同。他认为,优化的替代方案并非随机性,而是追求新颖性或趣味性,这是一种基于对过去而非未来的比较,利用丰富的历史信息进行决策。 Stanley 认为,这种方法适用于各个领域,包括商业、艺术和个人生活。他指出,在追求远大目标时,人们往往会忽视那些看似与目标无关,但却可能最终通向目标的中间步骤。他将这些中间步骤比作“踏脚石”或“游乐场”,鼓励人们在探索过程中不断发现新的“踏脚石”,最终可能通向最初的目标。 Stanley 还讨论了新颖性搜索算法,这是一种不设定明确目标,而是追求新颖性的算法。他认为,新颖性搜索算法能够在某些领域取得比目标导向型算法更好的结果,这说明了目标导向型方法的局限性。 Stanley 认为,趣味性是新颖性搜索算法的指南针,它基于个人的经验和进化历史的积累,是一种主观但信息丰富的判断标准。他强调,对趣味性的判断应该能够被解释和讨论,并指出计算机未来也可能参与到这种判断过程中。 Stanley 还讨论了新颖性搜索的局限性,以及其在生物进化中的启示。他认为,新颖性搜索是对生物进化中发散性属性的高度抽象,它突出了发散性在开放性系统中的重要作用。 最后,Stanley 讨论了该理论在人工智能、教育和科研经费分配等方面的应用,并指出目标导向的思维方式在这些领域中存在许多问题,需要进行改革。他主张在企业和政府中都应该支持目标导向型和开放式探索型两种研究。 Peter: 作为一名批判性理性主义者,Peter 试图寻找 Stanley 理论的反例,例如 Elon Musk 建立 SpaceX 的例子。Stanley 认为,这个例子尚未得出结论,因为 Musk 的目标是否最终实现尚不清楚。他指出,当距离目标足够近时,设定目标是可行的,而真正的远见卓识者是那些首先意识到距离目标只有一步之遥的人。他还指出,Musk 的动机可能并非仅仅是到达火星,而是为了主导未来的太空产业。 Peter 还提出了开放性问题,并探讨了目标与重大挑战之间的区别。Stanley 认为,对事业的奉献有两种方式:以目标为导向和对过程本身感兴趣。他将开放性视为一个“游乐场”,鼓励人们在其中探索,发现新的“踏脚石”。 Peter 还探讨了新颖性搜索与生物进化之间的关系,以及如何将新颖性搜索应用于实际问题。 Bruce: Bruce 提出了一些问题,例如如何用算法检测新颖性,以及创造力是否真的是一种搜索算法。

Deep Dive

Key Insights

What is the main thesis of Kenneth Stanley's book, 'Why Greatness Cannot Be Planned: The Myth of the Objective'?

The book argues that setting specific objectives can be counterproductive in complex systems, including machine learning, business, and personal life. Instead, pursuing what is interesting and novel can lead to better innovation and discovery.

Why does Kenneth Stanley believe that setting objectives can be counterproductive in complex systems?

Objectives in complex systems are often deceptive, leading to dead ends and blinding individuals or systems to other potential stepping stones that could have led to better outcomes. This is because complex spaces are inherently deceptive, making it difficult to predict the correct path towards a distant goal.

How does novelty search work in machine learning algorithms?

Novelty search algorithms measure and reward novelty instead of a specific objective. They compare current behaviors to past behaviors to find new and interesting paths, rather than optimizing towards a predefined goal. This can lead to unexpected and useful discoveries, even in simple domains.

What is the difference between pursuing an objective and following interestingness or novelty?

Pursuing an objective involves comparing current progress to a predefined goal, while following interestingness or novelty involves comparing current actions to past experiences. Interestingness and novelty allow for more exploration and can lead to innovative solutions that objectives might miss.

Can you provide a practical example of the objective paradox in action?

In the Pick Breeder experiment, people found interesting and novel images when they were not explicitly looking for them. This shows that sometimes the best discoveries are made when we are not focused on a specific goal, highlighting the limitations of objective-driven approaches.

What are quality diversity algorithms, and how do they relate to novelty search?

Quality diversity algorithms are successors to novelty search that aim to balance both the quality and diversity of solutions. They focus on finding a wide range of high-quality solutions rather than a single optimal one, making them more practical for real-world applications while still capturing the essence of open-ended exploration.

How does Kenneth Stanley’s view on evolution differ from traditional Darwinian perspectives?

Traditional Darwinian evolution focuses on optimization and survival, leading to convergence. Stanley’s view emphasizes divergence and open-endedness, which are crucial for the long-term creation of new species and complex life. He argues that the divergent nature of evolution is what makes it truly interesting and innovative.

What practical implications does Stanley's research have for funding and structuring research institutions?

Stanley suggests that research institutions, both in government and industry, should balance objective and non-objective pursuits. Government-funded research labs could take more risks by following interestingness and novelty, while corporate labs need to justify non-objective research as a shield against future disruption.

Why do humans have a psychological need for objectives?

Humans crave certainty and a sense of security, which objectives provide. Objectives create a veneer of control and predictability, making them psychologically satisfying. However, this can limit creativity and open-ended exploration, which are necessary for significant innovation.

How literally does Kenneth Stanley mean the idea that creativity is a kind of search?

Stanley means it quite literally. He views creativity as searching through a vast space of possibilities, looking for interesting and novel ideas or solutions. This framework helps in visualizing and understanding the process of innovation and discovery.

Shownotes Transcript

Here we interview AI researcher Kenneth Stanley, who makes the case that in complex systems, pursing specific objectives can actually be counterproductive. Instead, whether in machine learning, business, science, education, or art, we should pursue what is interesting. It is in this search for novelty—fueled by curiosity—where innovation and open-ended knowledge creation occurs.

Get Ken's book!

Why Greatness Cannot Be Planned: The Myth of the Objective)

Also:

  • Can Bruce find a counter example to Ken's thesis?

  • How does one 'detect novelty' using an algorithm?

  • Is creativity really a search algorithm?


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