In claims for damages arising from a victim's suicide following tortious injury, reasonable foreseeability of suicide is necessary but not sufficient — causation must also be established through a normative commonsense judgment. Where intervening extraneous events overwhelm the victim in the period between the tort and the suicide, the chain of causation may be broken even if the original injury contributed to the victim's vulnerability. The court is not bound by psychiatric opinions on causation but must make its own normative judgment. The question whether suicide itself breaks the chain of causation on policy grounds was left open.
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