High-tech systems and lower-tech systems often don\'t work well together. Flight delays, network crashes and the blackout of 2003 are prime examples. A new report from Detroit \'s Wayne State University examines problems caused by such \"technological peripheries.\" A group of researchers, organized by Wayne State and sponsored by the National Science Foundation of the United States and el Consejo Nacional Ciencia y Tecnología of Mexico, met last year in Mexico City to examine the challenges of large-scale systems, focusing on air transport networks. The workshop found that the development of technology in the developed world was outstripping the diffusion of that technology to developing countries. The mismatch will continue to lead to disasters until the world air transport system gets better at managing the introduction of technology, Wayne State University officials say.