2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/198691As an introduction to NuFact '99, the ICFA/ECFA Workshop on Neutrino Factories Based on Muon Storage Rings, I place the issues of neutrino properties and neutrino oscillations in the broader context of fermion flavor.Introduction to NuFact '99, the ICFA/ECFA Workshop on Neutrino Factories Based on Muon Storage Rings. 15 pages; LaTeX, uses elsartHigh Energy Physics - Phenomenologytext