Other archaeological theories, such as Marxist archaeology, instead interpret archaeological evidence within a framework for how its proponents believe society operates. Marxist archaeologists in general believe that the bipolarism that exists between the processual and post-processual debates is an opposition inherent within knowledge production and is in accord with a dialectical understanding of the world. Many Marxist archaeologists believe that it is this polarism within the anthropological discipline (and all academic disciplines) that fuels the questions that spur progress in archaeological theory and knowledge.