Premise: The Magic Roundabout (known in the original French as "Le Manège enchanté") was a French-British children's television programme created in France in 1963 by Serge Danot, with the help of Ivor Wood and Wood's French wife, Josiane. The series was originally broadcast from 1964 to 1974 on ORTF (Office de Radiodiffusion Télévision Française).
Hypothesis: Serge Danot, Ivor Wood, and Josiane made a decision to end the series in 1974