Billy's throw has some degree of influence on the bottle's shattering because if Billy had thrown his rock earlier and differently, the bottle would have shattered earlier and differently

There is, however, some reason for scepticism about whether the new theory handles the examples of late preemption and trumping completely satisfactorily. In the example of late preemption, Billy’s throw has some degree of influence on the shattering of the bottle. For if Billy had thrown his rock earlier (so that it preceded Suzy’s throw) and in a different manner, the bottle would have shattered earlier and in a different manner. Likewise, the sergeant’s command has some degree of influence on