WHAT does a one-horned mother cow have to do with leadership? The answer requires a bit of reflection. Let's begin with a few words about words. Words are only secondarily the means by which we communicate; they're primarily the means by which we think. One can scarcely think or talk of organizations or management these days without coming across what leading thinkers from many disciplines believe will be the principal science of the next century: the understanding of autocatalytic, nonlinear, complex, adaptive systems, usually referred to as "complexity.