what does the phrase theres no such thing as free lunch mean in economic terms
There ain't no such thing as a free lunch The phrase and the acronym are central to Robert Heinlein's 1966 science-fiction novel The Moon Is a Harsh Mistress, which helped popularize it.[2][3] The free-market economist Milton Friedman also popularized the phrase[1] by using it as the title of a 1975 book,[4] and it is used in economics literature to describe opportunity cost.[5] Campbell McConnell writes that the idea is "at the core of economics".[6]
Leftovers Leftovers from a restaurant meal may either be left behind to be discarded by the restaurant or taken away by the diner for later consumption. In order to take the food away, the diner may make a request for it to be packaged. The container used for such leftovers is commonly called a doggy bag or doggie bag. It is speculated that this derives from the euphemistic pretense that the food will be given to the diner's pet, rather than eaten by a person.[7] However it may also be a corruption of the East Anglian term docky, meaning lunch.[8] The term doggy bag was popularized in the 1970s etiquette columns of many newspapers.[9] Doggy bags are most common in restaurants that offer a take-out food service as well as sit-down meals, and their prevalence as an accepted social custom varies widely by location. In some countries, especially in Europe, some people would frown upon a diner asking for a doggy bag.[10]