This commentary on the Devezas-Corredine paper raises three questions: how
do we think and how do we need to think about K-waves, what causes K-waves
in the Devezas-Corredine model, and in what sense do social and biological
factors add to a better understanding of large-scale structural changes in
the world economy. (C) 2001 Elsevier Science Inc. All rights reserved.