Buddhist scholars have produced a number of intellectual theories, philosophies and world view concepts (see, for example, Abhidharma, Buddhist philosophy and Reality in Buddhism). Some schools of Buddhism discourage doctrinal study, and some regard it as essential practice.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who has produced a number of theories and concepts such as Abhidharma and Reality in Buddhism?
Buddhist scholars