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degenerate research program

Rob Sheldon on why string theory’s inflationary cosmos is a degenerate research program

Sheldon: The inflationary proposal has always been ad hoc. That is, a huge, faster-than-light expansion of the universe was proposed as a solution to the "flatness" problem, where the universe expands at a rate just sufficient to counter the gravitational attraction, where "just sufficient" means one part in 10^60 power. The inflationary model was invented to solve this fine-tuning problem. Read More ›