Malthus: if life can expand, it does. Civilizations too? Search for Malthusian galaxies: http://unenumerated.blogspot.co.uk/2010/02/interstellar-archaeology-and-surface.html … & http://scienceblogs.com/catdynamics/2012/10/05/new-frontiers-in-astronomy-cosmic-abundance-of-kardashevs/#comment-7097 …
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@NickSzabo4 Probably, but eventually bottom growth will outpace top growth: replicating as required to venture deeper into new substrates?
@simondlr Perhaps. Probably > room at top than bottom, but progress towards bottom in last 60 years much faster. < 1950 mostly top faster.
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@NickSzabo4 Yep. It makes sense though to look for massive stellar architecture like Dyson spheres (rather than radio signals). -
@simondlr Architecture not important: surfaces we could directly see with today's spectroscopes are what's worth thinking about.
End of conversation
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