On May 3, 2014, at 11:02 PM, Richard Aiken <xxxxxx@gmail.com> wrote:

> I remember reading someone's argument against undirected evolution which used the Krebs Cycle (an essential and extremely complex chemical process within photosynthesis) as an example of unavoidable interdependent equilibrium. A partial Krebs Cycle does nothing beneficial for an organism.

As a Krebs cycle, that is...this is the concept of 'irreducible complexity' often used by creationists to support their mythos.

<http://rationalwiki.org/wiki/Irreducible_complexity>

Evolution, at it's heart, is essentially a bodger. Complex mechanisms are made of smaller bits that may have been something else entirely to start.

--
Bruce Johnson

"Wherever you go, there you are." B. Banzai, PhD