Last Puzzle is the
Life Puzzle
I am intrigued by
how life evolved on our planet.
I won't exclude the
fact that life would have traveled from outer space in a tiny
meteorite.
Leave that argument
aside for the time being.
How to approach the
problem?
Top down approach?
Bottom up approach?
Either way I am
going to get bogged down somewhere around one (1) billion years into
the past.
The premises are
many.
1. Origin of
cellular life is incredible.
Almost impossible in
a hostile environment.
2. It happened very
very slowly.
3. In its progress
toward self perpetuation, there were many obstructions including
bombardment of meteorites.
4. It went through
five mass extinctions.
Currently it is well
into its sixth extinction.
5. There could have
been half life half chemical scenario.
How the interaction
went on we do not know.
6. Cellular life is
so labile it does not leave tell tale stories or leave behind markers
in stromatolites.
7. Earth is a living
planet and it does not have its oldest rocks available for study.
Its oldest rock is
only two and a half billion years old.
Earth life of four
and a half billion is estimated from meteorites.
There is two billion
years of missing history which we have to surmise.
8. In addition there
were catastrophes.
9. I am comfortable
with the last 500 million years of its evolution of that the last 3
to 5 million is matter of fact biology being unraveled.
10. How could I
dissect the first 500 hundred of the last billion years.
11. In addition
there are many other questions.
WHEN?
WHERE?
HOW?
Life originated?
12. What was the
smallest living particle?
We seem to assume
that we know a lot.
On the contrary we
know very little.
We are stuck with
the hereditary and survival of the fittest scenario that would suit
only the last 5 million years, assuming mitochonridal mutations is rare.
In fact,
major mitochondrial mutations are very very rare.
It is our energy
store.
If its goes haywire
life cannot exist in the current oxygen rich planet with cellular
life.
This preamble is for
further dissection by my friends far and near.
