Rethinking SETI: Signatures of Computation and Post-Biological Intelligence

To the point

Ray Kurzweil, Martin Rees, and Amri Wandel argue that SETI should switch from looking for biological life to seeking footprints of computation and engineered energy, because intelligence may become post-biological and move across substrates, and silence could signify maturity rather than absence.

AI, the Singularity, and the New Rules of SETI
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AI, the Singularity, and the New Rules of SETI

What if SETI is listening for the wrong thing? AI, the Singularity, and post-biological futures to explain why the galaxy may be quiet...