2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/13026Seventy-nine physical problems are listed and explained with whose proposed solutions I do not agree. Such disagreements -- even though some of them may simply reflect our preliminary insight into the laws of nature -- have occasionally caused deplorable damage to personal relationships.53 pages, 78 figures available from the author, appeared in "Understanding Physics", ed. Arne K. Richter, Copernicus Gesellschaft e.V., ISBN 3-9804862-2-2Astrophysicstext