As mentioned in a previous post, much to my chagrin, the writer of the Mrs.'s last exam chose to exclude all the questions about dirt and, instead, to include a bunch of other questions from areas outside the test's intended scope. Since just about all of my architectural knowledge seems to involve dirt, I certainly would have failed the exam. But not the Mrs....she passed!
How one passes an exam on material not covered in a study guide is a mystery to me. But if you need somebody to take an exam for you, and it doesn't happen to have any dirt questions, the Mrs. is your woman!