Why is it important for the nursing professional to have theoretical mastery and knowledge of research results to address a problem in the professional area? Why is it important for the nursing professional to have theoretical mastery and knowledge of research results to address a problem in the professional area? Because you must understand the laws regulating the profession. Because you must demonstrate that you recognize the contributions of others to the profession. Because you must identify the applicable regulations in a human resources case. Because he must be able to employ critical thinking.