I always wonder what's the best way to assess environmental impact of the oil pipeline. Sure, it's going to leak at some point, and create a mess that may never get cleaned up. However, is it safer (or energy efficient) than carrying the oil on trains/trucks?
In my view, each method needs to be justified on its own merits, since there is no a priori entitlement to extract and ship the oil in the first place. There's also no good justification for burdening the public with the risk of the pipeline, just because it replaces a greater risk somewhere else. If the pipeline is safe, prove it. If the trains and trucks are safe, prove it. If neither, then leave the oil in the gro…
Nothing is ever perfectly safe. Nothing you do ever has no impact. Everything in life is about tradeoffs, and the right thing to do is pick the best one. NOT wait for the perfect one!