I understand that "fool-proof", "idiot-proof", and "Murphy-proof" are nearly impossible. I have seen a few Murphy-proof designs out smarted by clever folks. The real point is that when you find a problem in the field, you fix it or minimize the risk. I am not sure that changing the description in the manual is really minimizing the risk when there are other methods, such as marking the parts could surely help. A one-off accident can be overlooked, but 5 or more, and still happening after 8 years.