Which one do you choose?
How important are those hazardous events?
How much money do you pay to remove those hazards?
When is it safe enough?
Everything depended on your opinion and your choice. It reveals the fact, prices and the cost of life.
Every cheep always will end up being expensive. Safety mission helps to balance the situation to find solution, isn’t it?
So, unsafe situation can let to occur hazardous occasion; such as centrifugal forces was a real cause of accident. (Here you can read the more) Or Small risk can be the huge one (Here you can read the more)
Finally one can easy understand that planning or making decision on safety will help us to improve attribute in science to develop the designs through safety issues and be careful about the moment we are in.