The Irrational Knot was first published in 1905, having been written in 1880. Within a framework of leisure class preoccupations and frivolities Shaw disdains hereditary status and proclaims the nobility of workers. Marriage, as the knot in question, is exemplified by the union of Marian Lind, a lady of the upper class, to Edward Conolly, always a workman but now a magnate, thanks to his invention of an electric motor that makes steam engines obsolete. The marriage soon deteriorates, primarily because Marian fails to rise above the preconceptions and limitations of her social class and is, therefore, unable to share her husband's interests.