Sun Microsystems' Chief Scientist and Java Developer, Bill Joy, has issued a dire warning that technology is approaching the point where an individual "hacker" could endanger us all. He observes that self-replicating nano-devices could become as ineradicable as insects. We've had numerous examples of the willingness of some twisted individuals to unleash computer viruses on an unsuspecting world. My take: I think the danger could be there if no one addresses the problem. Presumably, we'll go through intermediate stages before such a scenario is technically feasible. On the flip side, I have a little concern about what this kind of Luddite talk might inspire among technophobe activists. There are splinter elements in the world who are vehemently, and sometimes violently, committed to every conceivable cause.