I was writing a story, 'The Artistic Career of Corky,' about...

I was writing a story, 'The Artistic Career of Corky,' about two young men, Bertie Wooster and his friend Corky, getting into a lot of trouble, and neither of them had brains enough to get out of the trouble. I thought: Well, how can I get them out? And I thought: Suppose one of them had an omniscient valet?