I am guessing you are applying this to Sarah as an argument for probability of intelligence based on appearance alone. While that argument may have statistical merit it’s not really going to tell you anything about a particular individual. For my own part I think Sarah is quite intelligent, if income and general success be any measure. The beauty argument, OTOH, is a two-edged sword. One the one hand, it has intuitive appeal. Good genetics in general should be a predictor of good genetics in specific attributes. And beauty is not altogether subjective. I would like any posters here to step forward and honestly say Susan Boyle is in the same class as Sara Palin. No, there are issues of symmetry, proportionality, quality, etc., that do predict a general affirmation of beauty quite apart from subjective templates.
Now for the other hand. These kinds of studies, whether they are valid or not, should not be underestimated. There really are those who would use such information as propaganda weapons for negative eugenics, i.e., abortion and euthanasia. For all the alleged broadmindedness of the left, the reality is they are driven by the same dark utopias as some of the most malignant and death-producing personalities in human history. They want their “perfect world,” and they will gladly create any nightmare necessary to produce it, including turning a lack of beauty (as they see it) into an excuse for murder.
If that's the case, it doesn't say much for Michael Moore, Bill Maher, or Michelle Obama, does it?
FIRE TWO!!
OK, I'll bite. Who's smarter, Sarah Palin or Michelle Bachmann?
Cheers!