I agree, but actually it's just a really bad example that takes the reader to the wrong place because it has the participants acting so irrationally. The under

I agree, but actually it's just a really bad example that takes the reader to the wrong place because it has the participants acting so irrationally. The underlying issue is still there, they've just distracted from it by putting this in and having the reader go "hang on a second". They should have used a situation that was more believable, but also concentrated more on requests where the target likely wouldn't even seek confirmation.