The essence of professionalism is the delivery of a service in response to a social need. Professional education is a response to society’s demands for expert help provided by competent people. The growth and development of a profession is a function of specific needs, and the role of the professional changes because of changes in society. Professional education both responds to changing demands and provides impetus to changing the field itself, balancing a forward look with the realities of the present. Professional education is thus both reactive and initiating. Most problem solving on the job is reactive because decisions need to be made and little time is available for research or consultation with peers.