Figure 1. Models lie at the intersection of one or more constraints. The rectangle indicates the space of all possible models where each point in the space represents a different model of some phenomenon. Regions within the coloured ovals correspond to models that satisfy specific specific model constraints (where satisfaction could be defined as passing some threshold of a continuous value). If a constraint is well-justified, this implies that the true model is contained within the set of models that satisfy that constraint. Models that meet more constraints, then, are more likely to live within a smaller region of the hypothesis space and hence will be closer to the truth, indicated by the star in this diagram.