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Judea Pearl, a renowned figure in artificial intelligence and statistics, emphasizes the importance of causality in AI, providing profound insights into developing truly intelligent systems. His work in probabilistic approaches, including Bayesian networks, has reshaped how we understand and apply AI beyond just science. Pearl's book, 'The Book of Why,' presents key ideas accessible to the public, underlining the essence of causality in building advanced AI systems.
Drawing upon his early experiences in mathematics and engineering, growing up in Israel and serving in the military, Pearl delves into the significance of foundational concepts. Reflecting on his intellectual evolution and diverse educational backgrounds, Pearl showcases the critical role of early exposure to comprehensive and chronological approaches in mathematical education.
By delving into counterfactual reasoning and the do-operator in his work, Judea Pearl explores how machines can learn causal relationships from observational studies and interventions. He highlights the challenges in constructing causal models and aligning machine values with human ethics. Pearl's emphasis on playful manipulation and communication among machines underscores the intricate nature of learning causal inference.
Reflecting on the tragic loss of his son Daniel to terrorism, Judea Pearl condemns the normalization of evil and terrorism in society. He calls for recognizing and confronting acts of terrorism as taboo, rather than accepting them as political bargaining tools. His poignant reflections on evil underscore the urgent need to distinguish between good and evil in a world mired in hatred and intolerance.
Judea Pearl envisions his legacy as centered around the fundamental law of counterfactuals, empowering future generations to challenge inertia in academia and pursue their unique paths of inquiry. His call for democratizing common sense and fostering rebellious spirits in students reflects a deep commitment to advancing knowledge and encouraging critical thinking for years to come.
Judea Pearl is a professor at UCLA and a winner of the Turing Award, that’s generally recognized as the Nobel Prize of computing. He is one of the seminal figures in the field of artificial intelligence, computer science, and statistics. He has developed and championed probabilistic approaches to AI, including Bayesian Networks and profound ideas in causality in general. These ideas are important not just for AI, but to our understanding and practice of science. But in the field of AI, the idea of causality, cause and effect, to many, lies at the core of what is currently missing and what must be developed in order to build truly intelligent systems. For this reason, and many others, his work is worth returning to often.
This conversation is part of the Artificial Intelligence podcast. If you would like to get more information about this podcast go to https://lexfridman.com/ai or connect with @lexfridman on Twitter, LinkedIn, Facebook, Medium, or YouTube where you can watch the video versions of these conversations. If you enjoy the podcast, please rate it 5 stars on Apple Podcasts or support it on Patreon.
This episode is presented by Cash App. Download it (App Store, Google Play), use code “LexPodcast”.
Here’s the outline of the episode. On some podcast players you should be able to click the timestamp to jump to that time.
00:00 – Introduction
03:18 – Descartes and analytic geometry
06:25 – Good way to teach math
07:10 – From math to engineering
09:14 – Does God play dice?
10:47 – Free will
11:59 – Probability
22:21 – Machine learning
23:13 – Causal Networks
27:48 – Intelligent systems that reason with causation
29:29 – Do(x) operator
36:57 – Counterfactuals
44:12 – Reasoning by Metaphor
51:15 – Machine learning and causal reasoning
53:28 – Temporal aspect of causation
56:21 – Machine learning (continued)
59:15 – Human-level artificial intelligence
1:04:08 – Consciousness
1:04:31 – Concerns about AGI
1:09:53 – Religion and robotics
1:12:07 – Daniel Pearl
1:19:09 – Advice for students
1:21:00 – Legacy
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