Allan Milne Lees
2 min readNov 3, 2021

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It's easy to make unwarranted assumptions and fail to specify what we mean by particular words. That's why mathematics is used in order to be less fuzzy in our thinking and communications. As thermodynamics seems to favor local organization and hence life (though we need to be very careful and define what we mean by life - something we fail to do even about life here on Earth).

This in no way means that eukaryotic-style life is common; it is overwhelmingly likely that almost all life across the universe is equivalent to Earth's prokaryotic abundance. So the universe is likely teeming with bacteria-like and archaea-like life, and perhaps even some plant and fungal equivalents here and there, if eukaryotic life isn't vanishingly rare.

Beyond that, however, the probability of technologically sophisticated alien life is so remote as to not be worth considering. Here's why this is the case: if eukaryotic equivalents comprise around 1% of all life elsewhere (a heroic assumption, but let's run with it) then nearly all will be resident within liquid environments. And being in a liquid environment precludes all the activities associated with creating advanced technologies. That's why we don't see cetaceans and octopus aren't driving cars around the ocean. You can't smelt ore underwater without already having developed sophisticated technologies on land. And most life is aquatic, not land-based.

Add to that the fact that technology generally seems to enable a species to exterminate things faster than otherwise would be possible, it is highly probable that technological civilizations don't last long.

Thus we need not concern ourselves about technologically-capable alien life.

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Allan Milne Lees
Allan Milne Lees

Written by Allan Milne Lees

Anyone who enjoys my articles here on Medium may be interested in my books Why Democracy Failed and The Praying Ape, both available from Amazon.

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