I get that people don't want to waste time, but you lose a lot from taking this attitude.
When I went to school we had a lot of kids who were only temporarily in the country. Their parents were diplomats or corporate expats. The government still made the kids learn the local language, with the predictable outcome that these kids had no motivation whatsoever to learn the language.
Now with the debate in America being the way it is, a lot of these kids would actually have had a place to go back to, if they only spoke the language.
Similarly with a lot of things you learn in education, most of them seem to be of no use, but it's only because you don't learn them properly they are of no use.
When I went to school we had a lot of kids who were only temporarily in the country. Their parents were diplomats or corporate expats. The government still made the kids learn the local language, with the predictable outcome that these kids had no motivation whatsoever to learn the language.
Now with the debate in America being the way it is, a lot of these kids would actually have had a place to go back to, if they only spoke the language.
Similarly with a lot of things you learn in education, most of them seem to be of no use, but it's only because you don't learn them properly they are of no use.