From our perspective, I'm not sure it's a question of presupposition. There are separate issues here. When we identified our rail safety priority areas last summer, we talked about: if you have an emergency, how do you deal with it? If you have an emergency, how do you pay for it? Then separately, and really most importantly, how do you prevent emergencies? They are separate questions. We're not pretending to conflate them.
On May 15th, 2014. See this statement in context.