"4.0" often refers to the fourth generation of a particular technology or system. In the context of education, it can signify a grading system where a 4.0 represents the highest possible GPA, indicating excellent academic performance. In the realm of industry, "4.0" is commonly associated with Industry 4.0, which describes the current trend of automation and data exchange in manufacturing technologies. This includes the integration of Internet of Things (IoT), artificial intelligence (AI), and big data to create smart factories that enhance efficiency and productivity.