Can every course bring in something practical for life?

Not every course brings in something practical for life. Take, for example, curriculum in marxism-leninism that was on the agenda of all university departments in the former Soviet Union. Those courses were created to convince people that communism and socialism are the best systems in the world and to contrast it with capitalism so as to create respective negative attitudes and ensure that Soviet population fully supports existing regime. Not only did these courses not bring anything practical, they were harmful for critical thinking as they required students to learn dominant political discourses without any critical thinking, accept it as something so natural as for instance Newton laws, and thus potentially become easily manipulated and misled by their respective governments. That is why nowadays it is of particular importance that people who studied marxism-leninism in the past take media literacy or critical thinking courses and learn how to filter every peace of information, how to distinguish propaganda and even how to promote media freedom.