FIRSTLY; the expert should make sure that the layman understands what he is talking about, and avoid any assumption that such terms as diagnosis, presenting symp? tom, case record, or even mean the same thing to the layman, if they mean anything at all, that they mean to him. The definition of social work must have been too hard even for the editors of the Standard Dictionary for they omitted it from mention. What do we mean, therefore, for the purpose of this discussion, by social work, layman, and expert ? Social work is the thing being done under the name of charity, probation, child placing, recrea? tion, Boy Scout, Y. M. and Y. W. work, institutional care, etc, and the correlation of such activi? ties in various forms of community organization such as central councils, confidential exchanges, community chests. It comprises the effort to remove obstacles from the lives of individual people in misfortune, and supply them with renewed op? portunity, and also the effort to improve the physical environment and community facilities for the benefit of people. It is a very broad field and overlaps so many specific and clearly conceived activities that mainly on that account Dr. Flexner concluded in a paper on the subject of social work as a profession that social work could not properly claim a professional status. The work of engineer, doctor, lawyer, each has a definiteness in technique and character of service which is lacking in social work. An expert is one who possesses special skill and facility resulting from experience or practice, while, by contrast, the layman is one who is not skilled by experience or practice in the same particular pursuit. As there are undoubtedly people who by native ability, culture and experience are more expert in social work than others who may be paid to devote their whole time to it, let us take the expert to mean not only one who has special skill, but who also has elected social work as a vocation and receives a salary for doing it. Understanding the expert then in this sense, the layman means all those members of the commun? ity other than the paid worker, particularly those who voluntarily collaborate in some way in social work.