 A sixth argument to consider—drawn in part from Schaffer 2010b—is the argument from free recombination. This argument, which may potentially be run in favor of either priority pluralism or priority monism, begins with the idea that priority pluralism is connected to the modal claim of free recombination. If there really were multiple basic independent units of being—as the priority pluralist claims—then these units should be, in Hume’s (1748: 54) words, “entirely loose and separate.” They should be freely recombinable in any which way. Any way the one can be and any way the other can be ought to be compossible. A disconnected pluralistic heap thus should be amenable to free recombination, and thus failure of free recombination is the modal signature of an interconnected monistic cosmos. The argument from free recombination thus begins with: