 A final interpretive issue that arises for Cavendish is exactly how the sovereign is supposed to have so much power and authority if power and achievement are in large part a function of the responsiveness of the surrounding world. A sufficiently powerful sovereign would have to have full control of the military and other underlings, and these in turn would need to be able to control the larger populace (James 2003, xxv–xxvi). The sovereign would have to have enough power to force all of these people to act in accord with his or her will, but in the light of her view on occasional causation Cavendish is committed to the view that all that a sovereign would be able to do is send a signal or message to these beings in the hope that they would obey. The sovereign might try to take steps to increase the odds that underlings will abide by his message, but that would be a matter of sending another message still. A sovereign cannot simply decree that certain things happen: whether or not they happen is a function of the responsiveness of the members of the commonwealth. For Cavendish, an ecosystem holds together, but not because a single member imposes its will on the others. Instead, the members work together as a group, and if human beings are a part of nature, they would function under the same constraints. If Cavendish is right, a sovereign has to be extremely powerful to secure peace and stability, but what it is for a sovereign to have power is to be wise enough to figure out which are the messages that his subjects would accommodate (also Walters 2014, 180–182)