From the Editor
Travel from Human Capital to Portfolio Selection
When trying to address new problematics, researchers and practitioners should not forget the works done in the past. In this article, the PMJ editor discusses "old" references that answer questions raised by researchers today. These references support three general assumptions: (1) Competencies are at the sources of creation of value(s); (2) The more competent people, team, and organizations are, the more efficient and effective they are, and there is a system effect between these levels; and (3) In order to develop competence, knowledge is needed. In conclusion, the editor summarizes contemporary research whose results echo the ideas and assumptions found in these "old" references.