What is the shelf life of a condom? I know every package of condoms has an expiration date on them. But, I need to figure out when a specific package of condoms was manufactured by looking at the expiration date.
Middle class. The middle class is a class of people in the middle of a social hierarchy. In Weberian socio-economic terms, the middle class is the broad group of people in contemporary society who fall socio-economically between the working class and upper class. The common measures of what constitutes middle class vary significantly among cultures.
What is middle class, anyway? Everyone's talking about saving America's middle class. But just who exactly falls into this group? That's actually a much more difficult question to answer than it seems. While some experts define the middle class by income, others define it by lifestyle. Still others say it's a state of mind. Here are five different ways that economists, federal agencies and even the White House measure and characterize the middle class.