[ExI] Fermi Paradox (was: Anders Sandberg)
ben at zaiboc.net
Mon Jun 25 19:28:21 UTC 2018
Keith Henson <hkeithhenson at gmail.com> wrote:
>If civilizations are common and we don't see or hear from any of them,
that has dire implications for humanity's future.
Not necessarily. This doesn't have to imply a 'big filter', it could
just be a consequence of physics. We're probably all familiar with the
argument that the speed of light imposes big penalties on any
large-scale expansion of advanced civilisations. Maybe they all
inevitably expand 'downwards', into the nanoscale and further, and end
up being vast and enormously long-lived societies (subjectively) that
have no discernible footprint on the cosmos. We've still barely begun to
comprehend the implications of Feynman's famous statement that "There's
plenty of room at the bottom".
Maybe the answer to the question 'Where are they?' is 'everywhere', but
they are still forever unreachable, and even undetectable.
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