User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-122.167.38.137-20130627134534/@comment-3146930-20130627212851

The way I see it, Annabeth is book smart; which isn't a bad thing. I mean she knows a lot about architecture and Greek myths, as well as using the information given to her to it's maximum effect. She actually used all three of these skills against the followers of Mithras. Leo is smart as well, but in different areas. Leo is mechanically smart, able to pretty much build anything he wants to get the job done. However as shown in the series, he isn't exactly book smart like Annabeth and is also somewhat socially dumb; sometimes having a hard time relating to other people and preferring machines.

That isn't to say that the other characters are dumb. Frank for example is an excellent tactician, coming up with the plan that ultimately won them the War Game, managing to get them away from the Giants at his house, and having Arion drag that one giant into Canada. Percy is book dumb, but is very good at dealing with people and is also a good tactician like Frank, but not nearly at the same level (during The Last Olympian, he almost left a whole bridge undefended because he forgot about it). Hazel and Piper are really good at reading people and can be considered social experts, with average intelligence.