All you need to do is be sure that the 10 year old will understand that, and you're done. Good luck.
("I did this as a 16 year old" is not really very informative about 10 year olds. And even then you were probably atypical for one.)
I think this can be explained to kids, and I don't think Alex is the average 10-year-old. "The Boy Who Cried Wolf" is basically a story about "don't weaken your cheap signals by misusing them", so a general case is clearly already explainable to kids. I'm pretty sure that Alex is smart enough to understand the concept if explained well, and that James Miller has the teaching skills to explain the concept. I've been using this as the reason why I don't swear before turning 16. I am absolutely atypical for a teenager, but Alex has been described as being more similar to the average LW reader than to the average member of the general population, so this may be applicable.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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