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Is Intelligent Life Inevitable?
Biologists identified a series of “hard steps” on the journey from abiogenesis – that life evolved naturally from non-living matter – to modern civilisation. These steps, such as the evolution of multi-cellular organisms or even language make the stark suggestion that intelligent life is highly...
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Looking at the news right now, you have to ask do we have intelligent life on earth at all.
On the subject of the article though - the barriers to the formation of complex life are pretty huge of the sort even of the crudest snail or sea creature. I think people hoping for contact with intelligent aliens are in for a disappointment.
There has been life on this planet of ours for about 3 billion years. It took four billion years for the first land animals to crawl out of the sea. Our species in its current form, has only existed for about a hundred thousand years. Other forms such as Neanderthal Man evolved maybe a quarter of a million years ago. They were not that dim, and managed to survive in Ice Age Europe, but even if you take a hundred thousand years as the time since our own form of humanity evolved, we have only been here for one forty-five thousandth of the time the planet has existed, and one thirty-five thousandth of the time that life has existed. If it took that long in this pretty much ideal planet, how long would it take on Planet Zog? Would it happen at all, even if that planet had seas and land and reasonable weather?
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