“…And what might be the future for data fusion? While Jephcott and Beck (1998) see this as a core technique, which 'will be used on a routine basis for combining databases in the future' to improve marketing efficiency, it is a complex concept, difficult to explain to a senior marketing executive, and as the authors state: 'Unlike many other statistical techniques, data fusion methodologies generally do not contain much in the way of internal validity checks, creating the real possibility that decisions will be made using a fused database which does not represent validity.' In other words, a highly dangerous tool when in the wrong hands.…”