A person is threatened at gunpoint and forced to hand over their wallet. A compatibilist would say this person did NOT act freely because:
AThe laws of physics determined their action, leaving no room for genuine choice
BAn external constraint — the threat of violence — prevented them from acting on their own deliberation and desires
CThey could not have done otherwise given the circumstances, which violates the basic condition for freedom
DTheir higher-order desires were overridden, so they failed the reasons-responsiveness test
Classical compatibilists (Hume, Hobbes) identify freedom with the absence of external constraint, not the absence of causal determination. A mugging victim is not free because an outside force — not their own desires or deliberation — is driving the action. Note that option C is the incompatibilist/libertarian criterion ('could have done otherwise'), which compatibilists explicitly reject as the relevant standard for freedom. Option A is what compatibilism argues is irrelevant to freedom: causal determination by prior events does not by itself threaten moral responsibility.
Question 2 Multiple Choice
A philosophy student argues: 'Compatibilism fails because if determinism is true, nobody could ever have done otherwise — so no one is ever genuinely responsible.' The most direct compatibilist response is:
ADeterminism is probably false given quantum indeterminacy, so the premise doesn't apply
BCompatibilists accept that no one could have done otherwise in an absolute sense, but argue that moral responsibility doesn't require this kind of freedom
CThe student is correct, which is why compatibilists are actually libertarians about free will — they believe in a non-physical kind of causation
DActions that flow from deliberation are not causally determined in the same way physical events are
Compatibilism's core move is to reject the implicit premise that 'could have done otherwise' (in the absolute, contra-causal sense) is required for moral responsibility. Compatibilists do not dispute that determinism forecloses absolute alternative possibilities — they dispute that this matters. What matters for responsibility, on their view, is whether the action flowed from the agent's own desires, reasons, and deliberation — conditions that determinism leaves intact. Option A is a different (and weaker) strategy; option C gets compatibilism backwards.
Question 3 True / False
On Frankfurt's hierarchical account, an unwilling addict who acts on a craving they desperately wish they could eliminate does NOT act freely, even though no external force is physically compelling them.
TTrue
FFalse
Answer: True
Frankfurt's insight is that the mere absence of external constraint (Hobbes/Hume) is insufficient to distinguish free action from unfree action. The unwilling addict is moved by a first-order desire (the craving) that they repudiate from the inside — they have a higher-order desire NOT to have this craving move them. Because they cannot identify with the desire driving their action, Frankfurt says they lack freedom in the morally relevant sense, despite no physical bars being present. Compare the willing addict, who endorses their desire upon reflection and thus acts freely on Frankfurt's account.
Question 4 True / False
Compatibilists hold that free will requires the ability to have acted differently given exactly the same prior circumstances and causal history.
TTrue
FFalse
Answer: False
This is precisely the libertarian (incompatibilist) requirement that compatibilists reject. Compatibilists argue that 'could have done otherwise' in this absolute sense is NOT what freedom requires. They redefine freedom around something weaker: absence of external constraint (classical compatibilists), identification with one's desires (Frankfurt), or sensitivity to reasons (Fischer and Ravizza). The ability to have done otherwise in an alternate possible world with the same history is not on the table — compatibilists argue this requirement confuses metaphysical necessity with the kind of freedom relevant to moral practice.
Question 5 Short Answer
Describe the manipulation argument against compatibilism and explain why it poses a challenge. Then describe one way compatibilists have responded to it.
Think about your answer, then reveal below.
Model answer: The manipulation argument (associated with Derk Pereboom) imagines a neuroscientist who secretly implants desires in a person's brain, causing them to commit a crime. The person acts from their own desires, would not reflectively repudiate them, and is responsive to reasons — so many compatibilist conditions appear satisfied. Yet intuitively the person does not seem fully responsible, because their desires were engineered from outside. The argument challenges compatibilism by showing that its conditions can be met by cases that still feel like manipulation, not freedom. Responses vary: some compatibilists revise their account to require a 'right kind of history' (that the mechanism not have been implanted); others argue the intuition is unreliable and accept the case as genuinely free; still others argue the neuroscientist scenario violates reasons-responsiveness in subtler ways.
The manipulation argument is the most widely discussed objection to compatibilism because it targets the internal structure of compatibilist conditions rather than just reasserting incompatibilist intuitions. It reveals a tension between the 'current time-slice' conditions many compatibilists favor and the causal history of those conditions. How compatibilists respond — by revising conditions, biting the bullet, or challenging the intuition — reveals what they think is fundamentally at stake in debates about free will and responsibility.