Consider the potential interconnectedness of ecosystems. How far afield should we think? Is it enough to only consider your ecosystem? For example, imagine you started a business to rent wooden boats on a water system using only oars or electric motors. You can claim this recreational enterprise would have no impact on the ecosystem downstream, nor in the air. But the plant that builds the electric outboard motors is in the heart of a highly polluted industrial area in Asia, and the boats and oars you've chosen are made of trees from a region known for questionable logging practices. Is this an EBM issue? Is this YOUR problem?