The universe works for us because deep physical laws seem to work. But if the values of these laws would much change, in either direction, then all we see and know could not exist. No galaxies. No stars. No planets. No people. Do such special physical laws cry out for explanation?
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Bernard J. Carr is a Professor of Mathematics and Astronomy at Queen Mary, University of London. His research interests include the early universe, dark matter, general relativity, primordial black holes, and the anthropic principle.
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