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Abstract

In the past 50 years, cosmology has gone from a field known for the errors being in the exponents to a precision science. The transformation-powered by ideas, technology, a paradigm shift, and culture change-has revolutionized our understanding of the Universe, with the Lambda cold dark matter ( CDM) paradigm as its crowning achievement. I chronicle the journey of precision cosmology and finish with thoughts about the next cosmological paradigm. TurnerCDM. Section 4 sings the praises of CDM, highlights some of the grand opportunities ahead, and ends with some personal reflections.