counterfactual-reasoning

Counterfactual reasoning determines legal causation by constructing a minimal-deviation alternative world and comparing it with actual facts to test if altering a specific action changes the legal outcome. It applies but-for, NESS, and probability-based tests to resolve liability allocation.

You need counterfactual analysis for contract breach damages when estimating how losses would differ under a hypothetical lawful or non-breaching world. It isolates the actual financial impact of the breach by comparing real outcomes against a minimal-deviation alternative scenario.

Assess intervening cause and proportional liability by building a counterfactual world where one disputed act changes, then comparing the hypothetical outcome with actual facts. This identifies contribution levels and overdetermination to allocate responsibility accurately across multiple factors.

You can evaluate administrative legality and legislative impact by creating a minimal-deviation alternative world to see how changing a specific condition alters the legal outcome. This method supports conclusions using but-for and probability-based reasoning for administrative actions.

The best way to allocate damages in overdetermined scenarios is applying NESS and probability-based reasoning within a counterfactual framework. By comparing the actual facts with a hypothetical world lacking the disputed act, you isolate the true causal contribution to the harm.

The but-for test fails in multi-factor causation when multiple sufficient causes exist simultaneously, making each act non-essential. NESS reasoning helps by evaluating whether the disputed act was a necessary element of a sufficient set, accurately resolving overdetermination and liability allocation.