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It is the Holy Grail of physics: All the particles and forces of nature unified and explained by equations so simple that you can print them on your tee shirt. Are we getting there? What would a 'final theory' of fundamental physics do? And if we find it, what will we know? Will we know everything?
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Steven Weinberg was a theoretical physicist and Nobel laureate in Physics for his contributions to the unification of the weak force and electromagnetic interaction between elementary particles.
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