Unless you believe in non mainstream science such as panspermia where the creation of life on Earth was independent of the Earth’s environment, one cannot discount the formative years in Earth’s geological history in the creation of life, like the production of the complex molecules such as amino acids.It took 3.7 or more billion years for an intelligent life to evolve on Earth.
Earth is about 4.5 billion years old. Life first appeared on Earth 3.7 billion or more years ago.
It doesn’t matter how quickly a technological evolution occurred, it still took an extra 4.5 billion years or so before a life form was able to initiate a technological evolution.Humans have had satellite technology since 1957 (62 years ago). It looks like we will devastate our planet through global warming or war in the not too distant future. Maybe 100 year or more, but very unlikely for us to be around for another 1,000 years.
Consider 1,000 years in the context of 13.8 billion years.
And also consider the size of our universe and the time it takes light (and anything) to travel across space.
If intelligent life is out there at a specific place in the universe and for a specific short time frame (lets say 1,000 years) what are the chances that people on Earth will discover it in our life times when we are capable of discovering that (i.e. we have capable technology)
Scientists recently discovered the decay of a ¹²⁴Xe atom in a dark matter detector.We know for a fact it doesn't take longer than the age of the universe itself to evolve intelligent life.
Because we are here.
The half life of ¹²⁴Xe is around 18 sextillion years, far older than the age of the Universe.
Half life is a statistical average with the observed decay being a statistical outlier which I was alluding to for the time it took for intelligent life on Earth to develop.
It may very well be the average time for intelligent life to evolve in the Universe is older than the age of the Universe itself making intelligent life a very rare occurrence like the decay of a ¹²⁴Xe atom.
Once again let me emphasise this is speculation as is every other argument on the subject.
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