Scientific research always begins with a question, and asking questions in a scientific way is a fundamental prerequisite for scientific problem solving. Karl Marx said: “The fate which a question of the time has in common with every question justified by its content, and therefore rational, is that the question and not the answer constitutes the main difficulty. …World history itself has no other method than that of answering and disposing of old questions by putting new ones. ...[T]he questions...are the frank, uncompromising voices of the time embracing all individuals; they are its mottoes, they are the supremely practical utterances proclaiming the state of its soul.”