Reddit mentions of Fair Play: What Your Child Can Teach You About Economics, Values and the Meaning of Life

Very interesting. I'm surprised the portion is as high as 90%.

I think it's true that libertarians take intuitive moral principles and apply them more consistently than non-libertarians. One interpretation would see this as evidence for libertarianism. Another would see it as a reason to be cautious of extrapolating from simple intuitions.

Libertarian writers naturally adopt the former interpretation, often stressing how consistent the philosophy of liberty is with people's basic ethical intuitions. Examples are everywhere, but here are a couple:

• Landsburg's book Fair Play is about extending the ethics people learn as children to political and economic issues.
  
  
• Caplan has suggested that libertarianism is analogous to overlearning.
  
  
• Ethical intuitionism is sometimes taken, as by Michael Huemer, to support libertarianism.
  
  Not surprisingly, non-libertarians are more likely to favor the second interpretation.
  
  
• The libertarian says, "People are intuitive libertarians until it gets indoctrinated out of them." The statist rephrases this as, "Libertarianism sounds good until you think about it/learn more about how the world works."
  
  
• Less charitably, a progressive friend of mine described libertarianism as "political autism."
  
  A quibble with Ruwart's intro as written at the podcast link: it says she is a "former presidential nominee on the Libertarian Party ticket." But according to Wikipedia, she ran in 1984 and 2008, when the nominations went to Bergland and Barr, respectively.