That the interstellar object 1I/2017 U1 (‘Oumuamua) could be an extraterrestrial artefact is an unorthodox hypothesis. From a philosophical perspective, however, the structure of the underlying argument for the hypothesis is flawed.
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I thank A. Loeb, P. Vickers, T. Ord and S. McMahon for helpful comments.
The author declares no competing interests.
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Cowie, C. The ‘Oumuamua controversy. Nat Astron 5, 526–527 (2021). https://doi.org/10.1038/s41550-021-01387-z
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