User blog comment:Njalm2/Nanja's Intermediate Roleplaying Guide/@comment-2089817-20151115185635/@comment-136273-20151115191759

Precisely.

Characters have their own knowledge and experience. Just as a Kido specialist is unlikely to understand the principles of advanced Hakuda the same holds true as far as the latter's knowledge of obscure spells is concerned.

Of course, perceptive/knowledgeable/smart characters can figure things out. But it is imperative to describe their thought process. Trial and error, common sense, educated guess, the result of a thorough analysis? Because if one character just keeps perfectly countering each and every move of another we know something's fishy...