 Process philosophers share the view that being is dynamic or that there are no concrete static entities; however, as stressed throughout this entry, there are also profound differences in the way process philosophers work out this basic intuition in their descriptions of the structure of reality and our understanding of it. Which of the competing approaches to process philosophy can count as the currently most promising? If processist theories recommend themselves in terms of their explanatory force, as offering new solutions to old problems (section 3), or better conceptual resources for new tasks (section 4), then surely explanatory force should also be the standard for evaluating processist theories. But while cross-paradigm explanatory advantages in the sense of sections 3 and 4 can be gauged more straightforwardly, this becomes rather more difficult at the level of intra-paradigm comparisons. Does the wide scope of Whitehead’s philosophy of organism outweigh the fact that all explanatory technical terms are dissociated from the rest of philosophical discourse? Or again, is the explanatory force of a formal axiomatic process ontology greater than a process metaphysics formulated with the means of common sense terms whose meanings are carefully gerrymandered, or one that operates with a network of metaphors and relies on the reader’s hermeneutic response? Should depth and detail of the ontological description matter less perhaps than the impressive explanatory scope of a consistently naturalist process view of “The Whole Person”, from microphysics to macrosociology (Bickhard 2022)? Here, at the intra-paradigm level, all the far-reaching methodological questions aries that surround philosophical explanation in general. Setting these larger questions aside, and focusing just on processist work in the style of analytic philosophy, the explanatory force of a processist theory may depend on how well it addresses the following challenges.