Just because the line is fuzzy doesn't mean there isn't one.

(I'm not sure if you're trying to weaken my argument by challenging the idea of childhood altogether (which would be weird), or if you're just curious. If it's the former, we're probably not going to have a productive discussion. If it's the latter, I'm open to suggestions, though it probably deserves the attention of an educational psychologist or someone like that.)

Its the later (if I was challenging your argument, I would have stated my reasons). I think their is a huge difference in strategies / reason between the 12 and under set and the 13+ set. The article seemed like it was talking about 12 and under, but I wasn't really sure what your use of "kid" referred too.