D. R. Bates, of the Department of Applied Mathematics and Theoretical Physics, Queen's University, Belfast, argues that it would be unjustified to devote resources to the interstellar communication problem on the assumption that there is a neighbouring technological civilisation which continuously operates a beacon signal suited to us.
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Bates, D. CETI: put not your trust in beacons. Nature 252, 432–433 (1974). https://doi.org/10.1038/252432a0
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DOI: https://doi.org/10.1038/252432a0
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