LCA Methodology System Boundaries and Input Data in Consequential Life Cycle Inventory Analysis

changes in the life cycle. We distinguish it from attributional LCI methodology, which aims at describing the environmen-tally relevant physical flows to and from a life cycle and its subsystems. A consequential LCI methodology is designed to generate information on the consequences of actions. Text-books on decision theory (e.g., Grubbström 1977) are based on the recognition that such information is necessary to make a rational decision. Several authors have previously made similar distinctions be-tween the two types of life cycle assessment (LCA) methodol-ogy, although almost every author employs different terms t