One memory from math class somewhere along my childhood was the day we learned about direct proportionality.  This describes a relationship where one figure’s increases or decreases will impact another figure with equally proportioned increases or decreases.

An easy example would display the relationship between hours worked and wages earned: Work twenty hours at a given wage, then work forty hours at the same wage.  The second instance will see you double your salary.

However, the world is filled with realities where direct proportionality is not in play.

Ever find yourself logging longer hours, in the quest to boost productivity?  You may want to “check your math”.  According to Jessica Stillman, there is much reason to be wary of those “over-forty” hours.  The “bang for your buck” may be seriously lacking; it may even be bankrupting you.