Some time ago, a manufacturing company recruited you. The manager clarifies that because the differences in labor and material costs are so small, the company hardly ever needs to look into them. According to her, the corporation does not consider the MPV, MUV, LRV, or LEV since the total deviations are not significant enough to warrant concern. Do you concur with what she said? Explain your thinking using examples from the book or from your personal experience.