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It is actually quite easy to understand how life originated. Given the vast timeframes involved. 13 Billion years. It's all but unfathomable to try and imagine that length of time. Seems I remember Carl Sagan providing a great example, but it's not coming to me at the moment...but regardless....given the physical laws of the universe (gravity, atomic properties, chemical reactions resulting from them) it is actually quite easy to understand how stars and planets formed, how atoms, molecules and chemical substances came to be based on simple physical properties. Given the vast time-frames involved it is all but inevitable that these atoms, these molecules formed and arranged themselves into larger structures, crystals, strings, cells. It requires nothing more than physical laws of the universe and time and there is plenty of both.
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