Do we really need 7-12 years of higher education to be qualified

Do we really need 7-12 years of higher education to be qualified in many healthcare professions?Why or why not? If the history of the health profession could provide competent services with 4 years of higher education, why have we adopted the longer and later?? policy of educational programming?2. Some direct cost to turnover in healthcare think about factoring in the following variables:Lost revenueStart-up costsRecruitment agency feesSourcing and advertising costsInterview travel costsSigning bonusesMoving costsIn addition to the financial costs, consider the time costs too. For example, after calculating how many interviews it takes until you hire a physician or a nurse, think about how much time it costs both the interviewer and the interviewees. Like they say, time is money. What are some suggestions to reduce turnover??