It's not as if he's stupid, exactly. He just sees the world in quite a different way than most people do.

We talked a great deal about Daphne today, the two of us. He is still quite upset about it, and he keeps bringing it up because he cannot understand how Mr Crouch could do such a thing in defiance of all the laws of chivalry.

Which is something, really. If even Linus is seeing something wrong with the Protectorate, then you know people must be questioning it everywhere.