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The Energy Entropy Loves the Universe
In the early universe, energy was guaranteed to move in certain ways. So a minimum of structure was guaranteed for the star. Now most of the universe still consists of hydrogen and helium. But 2% consists of all the other atoms. And those atoms can combine so suddenly you can create new types of stuff. That takes us to threshold five - we only know of life on planet Earth. The best thing at the moment is that the universe is crawling with bacterial life.