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Why is an observer a critical part of quantum physics? What does it mean to be an observer? Does the act of observation affect what exists and what happens in the external world? Why is observation in the quantum world still a mystery?

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Alan Harvey Guth is a theoretical physicist and cosmologist. He has researched elementary particle theory (and how particle theory is applicable to the early universe). He is currently serving as Victor Weisskopf Professor of Physics at the Massachusetts Institute of Technology, and he is the originator of the inflationary universe theory.

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Closer To Truth, hosted by Robert Lawrence Kuhn and directed by Peter Getzels, presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.