Archaeological theory refers to the various intellectual frameworks through which archaeologists interpret archaeological data. Archaeological theory functions as the application of philosophy of science to archaeology, and is occasionally referred to as philosophy of archaeology. There is no one singular theory of archaeology, but many, with different archaeologists believing that information should be interpreted in different ways. Throughout the history of the discipline, various trends of support for certain archaeological theories have emerged, peaked, and in some cases died out. Different archaeological theories differ on what the goals of the discipline are and how they can be achieved. Some archaeological theories, such as processual archaeology, holds that archaeologists are able to develop accurate, objective information about past societies by applying the scientific method to their investigations, whilst others, such as post-processual archaeology, dispute this, and claim all archaeological data is tainted by human interpretation and social factors, and any interpretation they make about past societies is therefore subjective. 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. This constant interfacing and conflict between the extremes of the two heuristic playing grounds (subjective vs. objective) is believed to result in a continuous reconstruction of the past by scholars. Background Since the early 20th century, most accounts of archaeological methodology have accepted the data that is uncovered by the archaeologist is subsequently interpreted through a theoretical viewpoint. Nevertheless, the archaeological community is divided over the extent to which theory pervades the discipline. On one side, there are those who believe that certain archaeological techniques – such as excavation or recording – are neutral and outside of the bounds of theory, while on the other are those who believe that these too are also influenced by theoretical considerations. Archaeologist Ian Hodder, a prominent advocate of the latter view, criticised the alternate approach by highlighting that methodological decisions, such as where to open a trench, how diligently to excavate a stratigraphic layer and whether to keep every artefact discovered,