The writer
is referring to talk.origins faq
Thermodynamics, Evolution and
Creationism (much of this material can also be found in
my web
page).
Creationists have always claimed, and continue to claim,
that evolution violates the second law of thermodynamics,
which they claim will not permit order to spontaneously
arise from disorder. This argument is refuted by the fact
that the growth and development of living things clearly
represents an example of order spontaneously arising from
disorder. The creationist response has been to arbitrarily
postulate an outside mechanism which "overcomes" the second
law of thermodynamics. This outside mechanism is said to
exist in the case of the growth of living things, but does
not apply to the evolution of living things! The claim that
this outside mechanism is stated in the second law of
thermodynamics is completely untrue. Although mechanisms
exist for thermodynamical lo provide a mechanism to
overcome basic thermodynamics laws.
The laws of thermodynamics are rigorously based on the
mathematical treatment of a few fundamental axioms. I have
demonstrated, quite clearly, that the mathematics of
thermodynamics does not, repeat, does not, rule out order
spontaneously arising from disorder. If my position in this
regard is unacceptable to the above critic, then it is up
to him to refute the mathematics of my presentation. He has
not done so, but merely repeated unsubstantiated
creationist claims.
The comment that the formation of a crystalline
structure is not an example of order spontaneously arising
from disorder is truly bizarre. Ions or molecules in a
crystal are clearly more ordered than those randomly moving
in solution. The statement that there is an increase in
entropy in the crystal when the water evaporates is
completely untrue. As I repeatedly pointed out in my web
page, it is the OVERALL entropy that must increase. The
entropy of the crystal decreases upon formation, and the
entropy of the water increases upon evaporation. The
entropy increase of the water is greater than the entropy
DECREASE of the crystal, so the OVERALL NET ENTROPY
increases.
The terms "reversible" and "irreversible" are clearly
and specifically defined in any legitimate textbook of
thermodynamics. A reversible process is one in which the
tendency to go forward is exactly balanced by the tendency
to go backwards. In other words, it is characterized by a
state of rest. An infinitesimal change one way or the other
will make the process either go forward or go in the
reverse direction. The time required to do so will approach
infinity. Reversible processes are not real, but are used
as a mathematical tool to develop specific mathematical
relationships in thermodynamics. Any real process is
irreversible. As I pointed out, the term "irreversible"
does not, repeat, does not necessarily mean that the
process can not be reversed by one means or another. It
merely means that the reaction will not spontaneously
reverse itself.