Abstract
IT is often said that the determination of the deceleration term is one of the main aims of observational cosmology. In the following comments this view is questioned, and in a universe of indeterminate density, the third time derivative of the scaling variable is shown to be of greater fundamental importance.
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HARRISON, E. Observational tests in cosmology. Nature 260, 591–592 (1976). https://doi.org/10.1038/260591a0
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DOI: https://doi.org/10.1038/260591a0
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