9783659390555IndeterminacyOptionality预订
overgeneralisatiOptionalityacquisitionexpletive
预售indeterminacyoptionalityResidual
泛化选择性GeneralizationOptionality
选择性OvergeneralisatiOptionalityAcquisition
可选性OptionalityStrategic海外
破坏性不确定性UncertaintyOptionality