Critical Mass-Definition #1. An amount of material (such as plutonium) that is large enough to allow a nuclear reaction to occur.
Definition #2: The size, number, or amount of something that is needed to cause a particular result.
While growing up, my parents, like most parents, tried to give me as much information about different career paths as they could to help guide me in my life choices. I remember my mother telling me about how the benefits, particularly retirement, were often better for most government jobs though the pay usually lacked. She would say: “If you want to go into the military, go in as an officer. Stay in for 20 years and you will secure a great retirement in your early 40’s.”