Dead or alive: Desperately seeking Schrödinger’s cat

The present work is in response to a recent short note by Prof. W. Martienssen regarding the wave-particle duality. It is also dedicated to his pending 80th birthday for which not only the author, but a whole generation of physicists who have the privilege to call themselves his students, would like to congratulate him with the hope that his wave function may go on propagating for a very long time.