In her first scene, Jess lights a cigarette and puts it in an ashtray by the sink. When she goes to the sink a few minutes later, the ashtray is empty. See more
In a way, it can be said that Walter Ryder succeeded in his life's ambition, even though the man he created was, after all, himself. There may be easier ways to self-improvement, but sometimes it happens that the shortest distance between to points is a crooked line - through the Twilight Zone.