The fact is, biology *does* work on normal chemical principles. There has never been an observed reaction in any biological system that doesn't. The particular reactions may be complex, but the basic principles are very simple. Complexity built out of simplicity is the hallmark of this very universe. The universe as a whole has a very small subset of rules encompasses all phenomina in existence.
The quote you cited is confused. Are they talking about thermodynamics or aren't they? I think the author deliberately blurs the issue, because humans *do* follow the laws of thermodynamics - both entropy and enthalpy. There is no issue with thermodynamics, so if you're defining complexity based on thermodynamics, you have a very odd definition
Yes, water forms into snowflakes because it's the reaction in the direction of entropy. So is the synthesis of RNA, the creation of proteins, etc - they follow entropy also. That is not the question.
The question is whether complex phenomina can come from incredibly simple rules. The answer is a resounding *YES*. Learn about strange attractors, flocking algorithms, Conway's Game of Life, etc. Graph the number of iterations of "Z=Z^2 + C where Z>2" on the complex plane, and look at what you get (Mandelbrot Set). The issue is complexity (completely and utterly unrelated to thermodynamic order - a cold block of coal is more thermodynamically ordered than you are) occurring from simple rules. A snowflake is one of a near infinite number of cases in the world. The rules governing how water changes states are quite simple. But the iterative interaction in the freezing process leads to the beautiful designs that we see.
I hate how creationists continually (deliberately?) misunderstand the concept of entropy.
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"Illuminant light,
illuminate me."