... hypotheses and to explain, predict and model human spatial behaviour and decision making (Johnston, 2003). (Collectively, the adoption of ‘objective’, quantified means of collecting data, hypothesis ... and weighting sustainability surfaces based on economic employment, property values and leisure potential in an area of West London 41525.6 Representing attribute data in 3-D: population density ... essentially sci-entific activity, that is, a subject identifying research questions, testing hypotheses regarding possible causal relationships, and presenting the results with some sort of...