I know I say this once in awhile, but it’s worth noting:
Every good railroad track inspector out there has found something on the track during their career that has prevented a derailment. The money saved by that derailment that never happened would more than pay for all the wages, insurance, tools, training, and equipment for that track inspector’s entire career.
Today, I found one of those derailment-type track defects, and paid for my whole career for about the fifth time.