One popular style of argument for the thesis that determinism is incompatible with moral responsibility features manipulation. Its thrust is that regarding moral responsibility, there is no important difference between various cases of manipulation in which agents who A are not morally responsible for A-ing and ordinary cases of A-ing in deterministic worlds. There is a detailed argument of this kind in Derk Pereboom’s recent book (2001: 112–26). His strategy in what he calls his ‘four-case argument’ (117) is to describe (...) three cases of progressively weaker manipulation in which, he contends, the agent, Plum, is not morally responsible for killing his victim and to compare them to a related deterministic case that involves no manipulation. Pereboom argues that what blocks Plum’s moral responsibility for the killing in the first three cases is the fact that ‘his action results from a deterministic causal process that traces back to factors beyond his control’ and that, because this fact also obtains in the fourth case, Plum is not morally responsible for that killing either (116). My thesis is that Pereboom’s argument fails. (shrink)

I address various critiques of the approach to moral responsibility sketched in previous work by Ravizza and Fischer. I especially focus on the key issues pertaining to manipulation.

In _Living Without Free Will_, I develop and argue for a view according to which our being morally responsible would be ruled out if determinism were true, and also if indeterminism were true and the causes of our actions were exclusively events.¹ Absent agent causation, indeterministic causal histories are as threatening to moral responsibility as deterministic histories are, and a generalization argument from manipulation cases shows that deterministic histories indeed undermine moral responsibility. Agent causation has not been ruled out as (...) a coherent possibility, but it is not credible given our best physical theories. Hence we must take seriously the prospect that we are not free in the sense required for moral responsibility. I call the resulting view _hard incompatibilism_. Furthermore, contrary to widespread belief, a conception of life without free will would not at all be devastating to morality or to our sense of meaning in life, and in certain respects it may even be beneficial. (shrink)

This chapter defends a history-sensitive compatibilist view of free action and moral responsibility against various criticisms by compatibilists. It constructs a new argument for incompatibilism that makes vivid a problem that luck poses for compatibilism: the zygote argument. It is argued that the zygote argument is much more powerful than more familiar arguments for incompatibilism, and that, even so, compatibilism may survive the attack.