Ron Owens held a presentation on the physiological benefits of laughing at the end of July during a visit with friend Neil Einsbruch. Owens is a bereavement counselor in New Jersey and met Einsbruch as his teacher in seventh-grade music. The two also shared a passion for magic — Owens worked as a magician at the Bronx Zoo for 17 years. Owens said an advertisement for the talk mistakenly billed it as a talk about…