What about Hope and Charity?

At the checkout counter this afternoon, I saw a book that ... well, it never occurred to me that there might be such a book.

As you can see, it's The Complete Idiot's Guide To Faith.

That gave me pause.

Idiot's guide? To Faith?

I'm sure I understand what it's saying. But really. Idiots? And faith?

What I want to know is ... are they idiots if they have ... or seek ... faith?

Or are they idiots because they'll buy any kind of book?

I'm thinking the latter.