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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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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