Longevity Is the Key Factor in the Search for Technosignatures

@article{Balbi2021LongevityIT,
  title={Longevity Is the Key Factor in the Search for Technosignatures},
  author={Amedeo Balbi and Milan M. 'Cirkovi'c},
  journal={The Astronomical Journal},
  year={2021},
  volume={161}
}
It is well known that the chances of success of the search for extraterrestrial intelligence depend on the longevity of technological civilizations or, more broadly, on the duration of the signs of their existence, or technosignatures. Here, we re-examine this general tenet in more detail, and we show that its broader implications have not been given their proper significance. In particular, an often overlooked aspect is that the duration of a technosignature is in principle almost entirely… 

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