Quote:Life doesn't have the kind of plasticity that you seem to think it does. If it could adapt to a given environment, then it would live on almost all planets
Actually, life is extremely, amazingly plastic. Sure, we may be used to finding it in damp, warm, oxygenated environs, but there are organisms - right here on good old Terra - that live and thrive in dessicated environments; frigid environments; anaerobic environments; environments so rich in sulfur compounds that they'd kill any mammal of our acquaintance; environments of low enough pressure to kill a bird; environments of high enough pressure to crush a human skull (or even a car); environs so loaded with toxins that humans couldn't survive in them without very special equipment; and so on.
Give the number of different conditions under which life thrives on Earth, it is utterly silly to think that live could not survive in the environments of other planets.
Boru
‘I can’t be having with this.’ - Esmeralda Weatherwax