Cosmic Rays damage our babies' DNA, connecting the ancient past to the distant future

One big reason we can never fully know the past, let alone fully know the present or the future, is that these three theoretical categories don't really live in separate boxes, not out here in the real world.

So : energy from cosmic rays, originating from places trillions upon trillions upon trillions of miles away and hundreds of millions of years ago, smashes into our bodies every single minute of our lives, constantly mutating the DNA destined to become that of our children's children.

At the very least that causes the constant wear and tear on our bodies that ultimately contributes to our death.

In other cases these mutations go on to be serious cancers.

Sometimes those mutations so affects our  egg and sperm DNA that the DNA we pass onto our children ends up being subtly different than the DNA we got from our parents - with results far into the future that could be both good and bad.

Which is to say, Evolution's natural selection selects among individuals with subtly different DNAs within a population, slowly 'best matching' a particular body-with-unique-DNA to the currently existing niche that population is living within.

That natural selection actually happened was clear enough to Darwin and even to most of his critics, but he and they simply had no good explanation for what produced all that variation that natural selection picked among.

Later explanations from scientists were worse than useless--- with much 'hand-waving', they simply said they were the result of "spontaneous" mutations.

In fact lots of obvious things cause DNA mutations - but the most subtle and yet perhaps most prevalent are unusually energetic internal thermal noise and high level ionizing energy thrown off by external secondary cosmic ray particles hitting the body.

And the unexpected arrival of asteroids and comets into our solar system are yet other examples of things from out of the distance past potentially impacting the present and affecting the future.

There never can be any "Laplacian Theory of Everything"  that will allow us to predict the future so accurately that we can afford to drain our gene pool - or that of any other life form - of all the 'wrong answers' while keeping only the 'right ones'.

The one hundred and forty year old pursuit of an eugenics utopia was, is and will always be a total dead-end and survival technique disaster...