Knowing when to quit is a banausic philosophic adage of broad application which advances the seemingly unpopular admonition of retirement or withdrawal. Often it runs together with the metaphorical encouragement to abandon ship while there is still time. It is accordingly both a substantive and temporal admonition. The warning has been associated with almost every critical aspect of human endeavour and relationships. Most often, because of the prerequisite of involvement, the harangue applies to what for the moment at least is important to us. Accordingly the decision to “jump ship” at what is likely an inopportune instance is regularly equated with an element of possible indiscretion at the very least or the more probable abbreviation of what is already a bad or ineffective alliance.