Is the concept of social class still useful?

1. The problem What are the meanings of the term “social class”, which differs even in the works of Marx? Concept formation and the accurate definition of terms are the most important tools for the progress of the social sciences since, they allow for a clearer and finer distinction between different phenomena (Weber, 1904). Can a social class theory help us describe and explain, at least in part, the situation of economically advanced countries in recent decades? If so, which of the theories...