I have seen employers look for unicorns in their search for someone. Even with the choices the author outlines, they won't find someone, not at the salary that is usually offered, if such a person exists. Another choice is to actually train staff that work at the company and know the culture, the business and are already a fit. What a novel concept? If they are coming from a lower position, this might be easier to fill. Unfortunately, a lot of companies are short sighted.