Cases Troublesome for Scientists

And this points out the failure of InGodITrust to understand even the basics of evolutionary theory. It is somewhat ridiculous to point out examples of sexual selection and wonder how they are explained by natural selection. The mechanisms of evolution are not limited to merely mutation and natural selection (even though InGodITrust didn't mention mutation). There are several mechanisms of evolution that have been observed. Some of those mechanisms tend to increase genetic diversity (and thus change allele frequencies in a population) while others tend to decrease genetic diversity (and thus change allele frequencies in a population). Mechanisms that increase genetic diversity are mutation, gene flow, movable elements (transposable elements), and recombination. Mechanisms that decrease genetic diversity are natural selection, genetic drift, biased variation, and nonrandom mating (sexual selection).Sexual selection isn't a problem for natural selection. In fact, such sexual traits as "crazy plumage of some birds" developed, not because it is beneficial to survival, but because it lends differential reproductive success, i.e., females prefer such displays. And while such displays may not be helpful to survival, they may be offset because such displays are typical of exceedingly fit individuals that can overcome the disadvantages and survive to reproduce. After all, it is survival to reproduce that is important and not pure survival.

An excellent point. As an example, we have no idea as to why an apple falls to earth, we only observe that it does. We label our lack of understanding "gravity."