Thus, not only does the universe-generating mechanism in inflationary cosmology require prior unexplained fine tuning. It actually requires more fine tuning than it was proposed to explain, making the fine-tuning problem it was designed to solve significantly worse. Consider the fine tuning associated with the flatness problem (the ratio of the actual mass density of the universe to the critical mass density). In standard big bang cosmology it is about 1 part in 1059. Consider also that the fine tuning associated with the homogeneity of the cosmic microwave background radiation is a more
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