The tone of your comment would indicate that it would be fruitless to try to explain.  However, start with this:  dilbit is NOT crude oil.  It's not even "heavy oil" as Wente says.  It's diluted bitumen (tar).  When (not if) dilbit spills on water, the diluent evaporates quite quickly and the remaining bitumen sinks to the bottom.  There is currently no known technology to recover and clean up after such bitumen without destroying the ocean floor or riverbed in the process.  Kalamazoo.

The argument that Kinder Morgan has been pumping crude oil through the existing pipeline for years without any problems is like saying we have been playing Russian roulette with only one chamber loaded and since nothing has happened so far, let's load two chambers and see what happens.

Dilbit is a dinosaur product with no effective disaster recovery plan.

The legalities of BC's position are another matter.