Ford Co invested something called FMEA, which stands for Failure Mode Engineering Analysis. It is a way to manage the prevention and development of proactive containment of problems. After problems are listed and before solutions developed they are ranked in three areas from 1 to 10. The areas are frequency of occurrence (more likely the higher the number), detectability (harder to detect, the higher the number), and the cost. Cost could be in money or human life or both with the higher the likelihood the higher the number.

These three numbers are multiplied together and then all the problems ranked. The higher ones are addressed first in prevention or in developing containment systems. The exceptions to the ranking are that anything with a cost of life of 9 or 10 are automatically put to the top.