The problem statements that drive the theorizing process are more complex than they appear to be. Not only do they contain an anomaly to be explained, but they also contain a set of assumptions that can be confirmed or disconfirmed, a set of domain words that can be connected differently, details that can be generalized, a text that can be sorted into form words and
substance words, an implied story whose plot may be implausible, and answers to questions not yet asked. This richness links the problem to the theorist's past experience and allows for more criteria than validation to become relevant to the process (see Kaplan's related discussion of theo retical coherence, 1964, pp. 312-319).