Smartest Machine on Earth

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Watch Smartest Machine on Earth on PBS. See more from NOVA.

What is "machine learning"?

How did the IBM team employ that concept in the development of Watson's AI? What advantage did that provide over previous attempts at "intelligence"?

I've often mentioned the term "Empirical Scepticism". What does that mean? How does that relate to the concept of Machine Learning? How does this relate to your life?