This helps you measure the stability of requirements and concentrate on more stable requirements first, inherently diminishing the amount of change.
这有助于你衡量需求的稳定性，并从一开始就将注意力集中在更稳定的需求上，减少变化。
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And the National Institutes of Health Technology has research that shows pets provide their owners with greater psychological stability and a measure of protection from heart disease.
While there is no degree that is entirely recession-proof, data from the U.S. Bureau of Labor Statistics (BLS) can point you to certain careers with a measure of stability.