2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/106548Retrospectively, in 1905, Special Relativity seemed palpably close; it was "in the air". But apparently it needed the fresh approach of an unprejudiced newcomer, Einstein, to take the final step. I report, in a pedagogical fashion, on the scientific background that triggered the formulation of Special Relativity and also on the role of Lorentz and Poincare.35 pages, 4 figures. Text in german. Contribution to the 2005-annus-mirabilis celebration at the Alte Kantonsschule AarauHistory and Philosophy of Physicstext