Doubt and uncertainty

Richard Feynman discusses his life-long search for scientific answers, but says that there is no need to have the answer to everything. He has different levels of certainty about different questions, and admits he is not "absolutely sure" about anything. Feynman is more interested in living a life full of doubt than drawing conclusions that might be wrong. He says he is not frightened by not knowing things.

Release date: 10 May 2008

50 seconds

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