In 1925, Einstein went on a walk with a young student named Esther Salaman. As they wandered, he shared his core guiding intellectual principle: “I want to know how God created this world. I’m not interested in this or that phenomenon, in the spectrum of this or that element. I want to know His thoughts; the rest are just details.
“The phrase “God’s thoughts” is a delightfully apt metaphor for the ultimate goal of modern physics, which is to develop a perfect understanding of the laws of nature — what physicists call “a theory of everything,” or TOE.
Ideally, a TOE would answer all questions, leaving nothing unanswered. Why is the sky blue? Covered. Why does gravity exist? That’s covered, too. Stated in a more scientific way, a TOE would ideally explain all phenomena with a single theory, a single building block and a single force.
In my opinion, finding a TOE could take hundreds, or even thousands, of years. To understand why, let’s take stock. [The 18 Biggest Unsolved Mysteries in Physics]We know of two theories that, when taken together, give a good description of the world around us, but both are light-years from being a TOE.
Continue Reading Here: Einstein’s Quest to ‘Know God’s Thoughts’ Could Take Millennia | Space
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