2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/107293The possibility to have a deviation from relativistic quantum field theory requiring to go beyond effective field theories is discussed. A few recent attempts to go in this direction both at the theoretical and phenomenological levels are briefly reviewed.8 pages, in honor of Adriano Di Giacomo on his 70th birthday, contribution to the FestschriftHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext