 What, then, is the origin of the philosophical use of the term? It is not clear. Some have speculated that it originates with the British Emergentists of the early part of the twentieth century. This is because the British Emergentist Lloyd Morgan (1923) used the term ‘supervene’ to characterize a relation that emergent properties bear to their base properties, and his use became fairly widespread in the literature on emergence. However, Morgan used ‘supervene’ in essentially its vernacular sense, rather than in its current philosophical sense. He held that emergent properties are distinct from, and additional to, their base properties, and arise unpredictably from them. It was this use, not the current philosophical use, that became fairly widespread in the literature on emergence (see Van Cleve 1990; and McLaughlin 1992 and 1997b).