The great development of philosophy is not that or mainly it does not give new explanations and new explanations to existing problems, but that it has changed the way it raised philosophical questions in the face of the requirements of the times. The new development of the era raises new problems, condenses new categories and new theories. What does this passage mean? ['Philosophy can promote the development of the times because it raises new questions and condenses new categories and theories.', 'Philosophy is closely related to the times it faces, and it always asks new questions about the new development of the times.', 'A major development in philosophy is that it has changed the way it asks questions in response to the demands of the times.', 'The great development of philosophy lies not in its new interpretation of existing problems, but in its use of new methods to solve problems.']