Poincare's Stepchild said:Creationists often use an argument involving the 2nd Law of Thermodynamics, claiming that evolution violates it. The 2nd Law, however, is talking about a closed system where no extra energy can be introduced. The Earth is not a closed system, but get more energy from the sun continuously.
And, yes, they should shut up.
Then they say that evolution of dog breeds, for instance, is not really evolution, but I think that the "problem" of the 2nd law would apply anyway.
Somehow, 2nd law of thermodynamics is just a problem to acquiring modifications between lineages if these modifications somehow make divergent lineages sterile with each other. Ironically, I guess that would be more likely to be expected from "decrease of information", rather than the maintenance of species.
Also they will point that this is specially important because it´s the LAW of thermodynamics, against just a theory. They eventually will make this law vs theory point with "law of biogenesis", that all living beings are offspring, against abiogenesis (often saying that Pasteur was a creationist).
Then they fail to see that multiple special creations are multiple "violations" of such "law", less parciomoniously than sticking with that to a nearly singular origin of life or at least universal common ancestor.