Thermodynamics
gives evolution/OOL direction!
In
this post I’m going to assume that the academic establishment’s understanding
of evolution/OOL holds up; that is, I’m assuming that by a series of trial and
error incremental changes one organic structure changes into another with a slightly
different configuration and that this incremental process explains the transformation
of matter from its elementary state to highly complex self-perpetuating
configurations. This, as we have seen in the previous part, requires the mathematical
existence of a class of self-perpetuating configurations that are arranged in
configuration space to form a fully connected set, stretching from the “low
reaches” of elementary matter to complex multicellular organisms. This
connectedness allows self-perpetuating structures to effectively “migrate”
across configuration space by diffusion.
The
caveat here, as I mentioned in the last part of this series, is that it is by
no means clear that this connectedness is the case: In particular, self-perpetuating structures
are very likely to constitute such an extremely small fraction of the class of
all possible configurations that it feels intuitively unlikely there is enough
of them to populate configuration space with a connected set sufficiently dense
to facilitate evolution/OOL (although I have no proof of this and I don’t think
anyone else has; that’s why I continue worry the subject!). However, for the
purpose of this post I am taking on board the establishment’s assumption that
incremental evolution/OOL has happened in this way and seeing where it takes
us.
Well,
one place where it takes us is the conclusion that evolution/OOL, fairly
obviously, does have an asymmetrical directionality, just as do other
thermodynamic processes: That is, given certain initial conditions these
processes have an asymmetrical curve of change over time. For example, if we
take an elementary thermodynamic change like gas diffusion, then down at the
low level each particle knows no direction – all degrees of freedom are equally
preferred. However at the higher
macroscopic level, depending on initial conditions, the system asymmetrically
moves toward thermodynamic equilibrium as its particles populate the available
states. Lijkewise, evolution/OOL works as a kind of morphological disequilibrium: If we
start from a state of elementary matter (solids, liquids, gases) the result is diffusion
across configuration space toward organic structures. This diffusion motion across configuration
space is described in part 2 of this series*
It
is ironic that evolution/OOL is an outcome of the second law of
thermodynamics. The apparent intuitive
contradiction between the second law and evolution/OOL is not actually the case
because the second law only quantifies the overall entropy changes in a (closed)
system as it moves toward a higher statistical weight. Because the second law
places a constraint only on the overall system then increases in
order in subsystems do not violate the second law. (See for example: http://scientopia.org/blogs/goodmath/2011/12/12/second-law-silliness-from-sewell/)
Evolution/OOL,
as the academic establishment conceives it, has, then, directionality in the
thermodynamic sense. Actually this result is fairly intuitively obvious from computational
considerations: If evolution/OOL has
happened then starting from matter in its
elementary states (i.e, solids, liquids and gases) then it is obvious that
to reach the so-called “higher organisms” matter must pass through stages of organised forms that can only occur
in a particular sequence in time. E.g. organic
molecular precursors precede cells, cells precede multicellular organisms; that is, it is logically impossible for multicellular organisms to proceed
the organic components of which they are made. Of course it is quite possible, given the diffusional
nature of evolution/OOL, that individual cases can go “backwards or forwards” on
this sequence, but the sequence itself cannot be disrupted, thus imposing a
direction on the diffusion driven morphological changes in matter. There is, therefore, a general drift (if not individual drift) from
an initial condition of being in an elementary state (i.e, solids, liquids and
gases) toward more morphologically differentiated structures.
The
above point is also fairly obvious from more general computational considerations:
Not all problems are equally computationally complex. All other computational resources being equal, such as speed, memory, processor count etc, then clearly some
outcomes will take longer to compute than others. Computational complexity itself
imposes complexity sequencing or at least complexity banding on sets of outcomes. In summary, morphological disequilibrium entails that given an initial elementary state of matter evolution/OOL has a “preferred” direction; for the Earth, a few billions of years ago, the only morphological way was “up”!
But
getting some people to see this relatively elementary lesson is difficult
because it cuts across the intellectual interests of the polarised parties in the
North American debate. If you look at this old
post by Larry Moran you will see what I mean. He is very unwilling
to admit that from a starting point of elementary matter evolution/OOL has
anything that smacks of “progress”; in fact the whole idea that there may be
some kind of computational complexity banding amongst configurations gives him the
jitters. He has been so influenced by the implicit overriding nihilism of his atheism that
a cosmos showing a progressive development in complexity just looks too
spooky to him; the notion that some organisms are more “complex” than others
probably unnerves him because it could be the thin end of the theist wedge
about life having purpose. Also, see the discussion I had with one of Larry Moran’s
atheist commenters in the comments section of the same blog post. This atheist
showed that he was very unwilling to accept an elementary thermodynamic lesson.
I have actually recreated this discussion in the comments section of this post
(coming soon).
There
is nothing intellectually untoward with this concept of evolutionary/OOL
direction; it is simply a thermodynamic outcome of the academic establishment’s
requirements. But as I have already suggested, the above considerations
actually cut across the expectations of both sides of the polarised North
American debate between atheists and theists. Nihilistically inclined atheists are
confounded by the directionality of our universe and many in the creationist/IDist
lobby still cling onto the idea that the second law of thermodynamics contradicts
evolution. Moreover, both sides are inclined to parody evolution as a directionless,
unguided, “chance” , something-for-nothing process; at least that is something they can both agree on! But then that is something they are both wrong
about!
An idyllic initial creation according to the Jehovah's Witnesses! This picture trades on the thermodynamic naivety that as far as morphology is concerned the only way is down. Interesting to note that there are no dinosaurs in this picture; I have never seen dinosaurs appearing in JW depictions of the pre-fall world!
(From http://www.jw.org/en/publications/books/bible-stories/part-1-creation-to-the-flood/)
Footnote:
Clearly
there aren't enough organisms to approximate a real gas-like diffusion. However,
the diffusion we are thinking of here can be thought of as the abstract flow of mathematical probability.