Actually, it's interesting you point that out because I think I heard that with respect to VIA's testimony today, that it's about human error. If I can quickly find Mr. Vena's testimony at CN, he said that they conduct 1,000 audits per day to see what their employees are doing, as if the employees are the ones who are causing the safety problem.
On April 8th, 2014. See this statement in context.