We are probably the only universal problem solving biological life form on this planet right now (but not in the future), and Earth has possibly the only biological life in the visible universe, but it seems improbable that we are the only universal problem solving machines.
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Replying to @Plinz
I think lifeforms are common, but nature also loves equilibrium. Galaxy might be full of planets where dinosaurs still roam ;p
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Replying to @sd_marlow
Life forms require the spontaneous autogenesis of a fully functional evolvable self replicator, adjacent to a source of sustainably exploitable source of negentropy. That might require an enormous amount of dice rolls, perhaps more than there are planetary surfaces.
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Replying to @Plinz
Life = replication for sure. As for food source, it wouldn't be organic (because no pre-organic food group would exist yet). My point is the conditions that require intelligence for survival may be rare (because it's not an evolutionary need).
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Replying to @sd_marlow
Organic life is not non-mechanical life. The insanely complicated cell is just the roughly simplest fully autonomous and robustly self-replicating machine that can be built from molecules.
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Replying to @Plinz @sd_marlow
Simpler self-replicating machines have been imagined, depends on what you're willing to accept as a vitamin: http://www.molecularassembler.com/KSRM.htm
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Easy to imagine. But evolution is likely to reduce redundancy where it can
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