An expert is a person who avoids the small errors while sweeping on to the grand fallacy.

About Steven Weinberg

Steven Weinbergwas an American theoretical physicist and Nobel laureate in physics for his contributions with Abdus Salam and Sheldon Glashow to the unification of the weak force and electromagnetic interaction between elementary particles.
He held the Josey Regental Chair in Science at the University of Texas at Austin, where he was a member of the Physics and Astronomy Departments.

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