Paul Watzlawick was an Austrian-American psychologist and philosopher. A theoretician in communication theory and radical constructivism, he has commented in the fields of family therapy and general psychotherapy. He was one of the most influential figures at the Mental Research Institute and lived and worked in Palo Alto, California.
In 1877 Thomas A. Edison conceived the first idea for his phonograph, the very first mechanical tool for recording and reproducing (replaying) sound. The phonograph also was the invention that first gained him public notice.