Debate Continues Over Evidence of Technosignatures in Old Photographic Plates

This paper presents a response to a critique of previous studies that alleged evidence for technosignatures in the POSS1-E photographic plates. The authors defend their original statistical analyses, arguing that the critique conflates object-level validation with ensemble-level statistical inference. They also question the validity of the aggressively filtered subset used in the critique, citing the significant reduction in sample size and the lack of complete temporal information. Furthermore, the authors emphasize the importance of including the cos(Dec) factor in the horizontal separation metric for accurate plate assignment and time reconstruction. They also point out that the critique lacks uncertainty estimates or error propagation, limiting the interpretability of the claimed null results. The authors conclude that the principal findings of their original studies are not invalidated by the analyses presented in the critique. This debate highlights the challenges in identifying potential technosignatures and the importance of rigorous statistical analysis in SETI research.

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