Even with good knowledge of a system people forget things. The blame for this incident falls 100% on rails and its awful design. It's like blaming the driver fo

Even with good knowledge of a system people forget things. The blame for this incident falls 100% on rails and its awful design. It's like blaming the driver for crashing your car whose brakes can silently and unpredictably fail unless you press some button when you first get into the car. Critical failure points should be isolated aggressively. Many software "engineers" have not yet grasped this.