Revised contributions and discussions from a two-day international conference on "Information and Communications Technologies, Employment, and Earnings," organized by the editors, held in Nice in June 1998, and sponsored by the Conseil de l'Emploi, des Revenus et de la Coh?esion Sociale (CERC), and by the 10th CREST-NBER Franco-American economic seminar.Essays on the computer and the economy, p…