Arrival fallacy

Core claim: A current problem is dismissed, deferred, or left unaddressed on the basis that a future event – which is unlikely to occur or factually unrelated to the problem – will resolve it.

• Action on a present issue is postponed or abandoned because a future development (technological breakthrough, policy change, cultural shift, religious eschatology) is expected to make the issue irrelevant.
• The expected event has little or no factual basis for actually resolving the specific problem in question – the expectation rests primarily on desire rather than evidence.
• The argument implicitly treats the anticipation of a solution as equivalent to its existence, thereby justifying inaction now.
• A long-pursued goal is treated as an endpoint beyond which no further problems exist (“happily ever after” thinking), ignoring that new challenges will arise regardless.

• The arrival fallacy is a specific form of wishful thinking: the “wish” takes the shape of expecting a particular future event to resolve things, rather than simply hoping a current state is true.
• It can also be understood as a glorification of the future (in contrast to nostalgia as glorification of the past): the future is idealised in such a way that present problems appear trivial by comparison.
• The religious origin of the term (“Parousia” / “Second Coming”) should not limit its application – any context where an expected arrival or event is used to justify ignoring current issues qualifies.

• The expectation is based on concrete, verifiable developments that are reasonably certain to change conditions (e.g., a scheduled infrastructure project with funding and timeline already in place).
• A problem is genuinely transient by nature and will resolve without intervention (e.g., a temporary side-effect of medication that wears off after treatment ends).
• The discussion explicitly acknowledges the uncertainty of the expected event and still takes appropriate action on the current problem.

• Wishful thinking – broader pattern of accepting claims because they are desirable. Ask: is the error about believing a current state is true (→ wishful thinking), or about deferring action based on an expected future event (→ arrival fallacy)?
• Appeal to consequences – argues for/against a factual claim from its desirability. Ask: is the argument “X must be true because X being false would have bad consequences” (→ appeal to consequences), or “I don't need to act now because Y will fix it later” (→ arrival fallacy)?
• “Wait and see” – Sometimes deferring action is rational when there is reason to believe that a problem is genuinely transient. Ask: is there sufficient evidence the situation may self-resolve (→ no fallacy), or is the expectation mostly aspirational (→ arrival fallacy)?

Input: “Surely they'll find a cure for my condition in a few years, so I don't need to change my lifestyle right now.”
Output: Expecting a future medical breakthrough without concrete evidence that one is imminent does not justify ignoring present risk factors. The expectation substitutes for action rather than complementing it.

Input: “We'll just move to another planet once we've destroyed this one – no need to worry about sustainability now.”
Output: Interplanetary colonisation on a scale relevant to the global population is not a foreseeable or planned development. Using its mere conceivability as justification for inaction on current environmental problems commits the arrival fallacy.

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