Because that's a reality, the strategic environmental assessment tool—there's a cabinet directive refreshed in 2010 here. It's used in Europe extensively and there are equivalent things in the U.S.A. That needs to be done to incorporate projected cumulative impacts beyond the present. The strategic part is essentially your multi-values plan for the future. If Canada completed those for all of its biomes, future generations would not be experiencing such great risk.
On April 18th, 2013. See this statement in context.