This paper proposes to qualify a country's human development as potentially
unsustainable if the net depreciation of its manufactured and natural capi
tal stock is bigger than its investment. Linking the Human Development Inde
x with sustainability in this way would allow the United Nations Developmen
t Programme (UNDP) to check whether a country is 'mortgaging the choices of
future generations'. An analysis for 155 countries leads to the conclusion
that the indicated human development of 42 countries is potentially unsust
ainable. Most of these countries have a low HDI, which means that even this
low achievement is not sustainable into the future. The results make a cas
e for both a policy reform within these countries and for external assistan
ce to help maintain at least this low level of human development. (C) 2001
Elsevier Science B.V. All rights reserved.