Sellars’s other ‘ought’ is the ought-to-be, aka rules of criticism.  For example, it ought to be the case that dogs come when their masters call.  Such a rule speaks to no agent in particular, and it is certainly not a rule that dogs obey in the paradigmatic sense.  It simply endorses a particular state of affairs without regard for any mode of achieving it.  Still, dogs can exhibit a pattern of behavior that accords with the rule, and they can do so because of the rule, if their masters train them to come when called because the masters have reasoned along the following lines: