Life in the Universe apparently could occur on any one about 100 billion other planets that have the exact complex mix of conditions needed.
This is called the Mediocrity Principle and it has wider application in helping reduce our ever present human hubris.
Now as it happened, Life did occur on Earth and four billion years later it is still around, for now.
But with a slight shift in the conditions here on Earth it might never have happened - or not have happened for very long.
All down to chance, luck,buddy --- what have you.
Ditto for us humans generally.
God, having an inordinate fondness for beetles, has given Earth 150,000 species and trillions of individual members.
We humans are now down to one species and 70,000 or so years ago were down to perhaps a thousand breeding couples.
Humanity as an endangered species --- like Whooping Crane.
A slight change of conditions 4 million years ago, 400,000 years ago, 40,000 years ago, tomorrow - and we'd disappear --- maybe with nothing remotely like us ever re-emerging again.
So, a fragile and near run thing, this human civilization.
Not at all like the bacteria - there at the birth of Life and still ruling the Earth , four billion years later.
If humanity is like big hunky Sumo Wrestlers with a bad news cancer checkup ever just around the corner, bacteria seem to be like small jockeys that repeatedly break bones falling off mounts and yet keep on ticking.
Meek and small and weak, they definitely seem destined to inherit the Earth ---- as humans exist stage left a few thousand or million years from now.
If we humanoids persist in thinking that we have ascended far far above our early days as apes (or more accurately as bacteria), it should be shattering to accept that we still share almost all our DNA with the chimps and our most vital and fundamental genes with the earliest bacteria.
But our egos remain shatter proof--- the Dawsonian Revolution still seems something most of us slept right through.
And as a result, anthropocentric progress is still killing this planet with the Sixth Extinction.
Hence this book ...