Preface
Preface

Summary/Abstract: The influence of Charles Sanders Peirce (1839–1914) on various disciplines has been widespread in the century since his death – but erratic. His legacy in American pragmatic philosophy began early, during his lifetime; his legacy in what he called semeiotic began later, in the decade before and the decade after his death; still later came a significant impact on mathematical logic and the development of digital computers and artifi cial intelligence, which he anticipated by speculating that logic/semeiotic (especially the generation of hypotheses) could be automated. What has made his thought especially fruitful for research and development in very recent industrial applications of intelligent systems is that his pragmatistic semeiotic is grounded in the “fuzzy” notion of clustering items by rough similarity rather than maintaining rigid category boundaries.

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