 That Beauchamp and Childress take (wide) reflective equilibrium to be such a crucial component of their approach is an important aspect of their approach as it currently stands. As their view has evolved over subsequent editions of PBE, reflective equilibrium has grown to have a more and more prominent role. An important result of this embrace of reflective equilibrium is that, paired with Beauchamp and Childress’ appeal to the common morality, we have a hybrid approach to justification, hybrid in the sense of embracing both coherentism and foundationalism. Reflective equilibrium is the source of coherentism, with the appeal to the common morality meant to provide a foundation. Before moving on to a closer look at the notion of the common morality, we should note that this hybrid approach differs from accounts of reflective equilibrium we might find in political theory, for example, and in other areas of practical ethics. Those more standard accounts involve achieving moral justification by bringing the various elements of our moral reflection into contact with one another, with none of these elements regarded as foundational and all of them regarded as open to revision. By contrast, Beauchamp and Childress accord foundational status to the common morality, and it is the common morality that underwrites their four principles.