A Workable Model of the Genesis of Life on the Earth
The thesis to be developed here is that life on earth will
result from three factors:
1. Awareness must exist
in the lowest of life forms and can reasonably be hypothesized to be
an attribute of molecular complexity as is liquidity an attribute of
water at an appropriate temperature. Specifically it is being
suggested that a relatively small carbon molecule that can be
imagined to come into existence by random events in a suitable
environment will acquire as an attribute, awareness. A suitable
environment would appear to be an ocean of water in which an
abundance of carbon atoms are floating along with trace quantities of
other atoms and a source of energy. This environment would be
expected to obtain when waves of water pound onto a rocky shore,
releasing the carbon contained in the rocks.
2. An attribute of awareness must be the conservative
impulse to continue to exist. This would appear to be in accord with
experience.
3. A second attribute of awareness must be the ability to
choose. No suggestion is being made that sense organs exist. Only
that awareness is short for self awareness and is in essence a
receiver of information. That other entities will radiate and the self
aware molecule is capable of sensing that radiation through its
effects on itself. For instance that heat would have the effect of
expanding the several atoms making up its body and it is sensible of
that fact.
With these three factors which we will define as indivisible
attributes of being, then what we see of life on this planet must
inescapably follow.
The living molecule, quickly realizing that action is
necessary to evade the effects of entropy, and having only one
capability in the beginning, that of choice, will choose to combine
with some other entity to repair damage from radiation on itself.
Everything depends on making a good choice. Just any atom or
molecule won't do, one has to be chosen that provides what is needed
for continued survival of the chooser. In the beginning we can
imagine that more than the minimum number of carbon atoms have
randomly combined to produce awareness and that losses begin to
occur and also gains that lead to awareness that departure from
awareness is a possibility and that continued combining with other
carbon molecules is the answer to that problem.
So, first awareness arrives along with its attributes, and
then awareness of continued life and the possibility of death.
Survival immediately becomes the inescapable problem on which
awareness is fixed.
Soon after this the living molecule becomes aware that,
since choice is the only ability inherent in its being, the existence of
choices is crucial to continued survival and that that is one factor
controlling choice. It will be imperative that one chooses in order to
generate more choices.
Through choice it soon becomes clear that choosing
molecules with attached protein is one way to minimize radiation
damage. Soon thereafter choosing molecules more easily able to self
repair becomes important which leads eventually to replicons and
then viruses.
From this point forward the story is told by Lynn Margulis
in her book, Origins of Sex.
* * *
Tracing out from the beginning to the virus would follow
these steps.
Awareness arrives. The ocean is beating on the shore,
freeing up carbon and the sun is shining. As the carbon atoms
become more dense in the sunlight they randomly bounce into one
another and some of them stick. Thus molecules of various designs
begin to appear and some of them become aware. Thus, many
variations will exist expressing a variety of properties.
Awareness of death and survival arrives. The conservative
wish to continue is inherent in awareness, this produces awareness
of its opposite. It may be that the intensity of awareness when a
carbon atom is lost is perceptible and the gain when a molecule is
acquired also.
Awareness that choice is the only capability available
arrives. In the beginning, the only way to affect one's fate is through
choice. Since the molecule is aware, if a choice exists, then the
possibility of engineering also exists.
Awareness arrives that the only currently available way to
manifest choice, is negative. One can't yet take, only give. The only
way to express choice, in the beginning, is in discarding what is not
wanted and hoping that what is next acquired because of the freed
up connections will be more useful. But, this is powerful. It is very
like the computer games based on a search in a dark cavern for
objects that can be of use in winning the game.
Random events produce a variety of carbon molecules.
Aware ones discard appendages that aren't useful and await the
arrival of the next. If it is useful it is retained, if not it is discarded.
The only physical capability involved is the arrangement of energy
within the molecule to allow the breaking of one atomic
connection.
This is no different than the female turkey evaluating the
males dancing around her in hopes of identifying one that will bring
new capability and survival potential to her.
Over time, in a carbon rich environment filled with carbon
molecule fragments, this strategy will provide the aware molecule
with anything it could wish. No prediction of what might arrive
exists, only the awareness to notice when improvements occur. This
is happening in millions of cases at the same time. It is a kind of
lottery. Some will acquire a little protein and they will survive
longer because of the radiation shield the protein provides.
Then the aware molecule becomes aware that radiation
damage can be repaired by replacement of the missing atoms. Soon,
some molecules are arranged in a way that facilitates repair.
Eventually, redundancy is discovered, so that a pattern exists on
which to base repairs. Then chemicals that facilitate atomic bonding
and breaking of bonds is discovered. The next step is the recognition
that splitting the redundant molecule in half produces two and they
can then rebuild their redundancy and that two have more chance of
survival than one.
Next, the awareness arrives that to retain the chemicals
that make construction practical a boundary would be useful. A wall,
separating the aware molecule and its tools from the general
environment. Then other molecules discover that by invading the
newly constructed cell they can acquire the tools they need for
reproduction. This leads to a wish to travel in some efficient way to
another cell, when the one currently occupied is fully exploited.
So, choosing carefully among the molecular fragments
floating within the cell, a vehicle is devised capable of containing the
aware molecule and transporting it from one cell to another likely
looking candidate.
Thus we arrive at cells and viruses. The virus is exercising
its choosing capability in deciding on a cell to invade.