Category killer = single category big box (e. g. , home depot) that threatens the same department existing within department stores. Course emphasis: mostly private sector rather than public sector, mostly retail examples, mostly north american and european examples, mostly post 1950. Average household having access to automobiles and accompanying infrastructure (e. g. , power lines, sewer pipes, etc. ) facilitated suburbanization (e. g. , middle and high income) in big cities in north america: mostly practical, but also academic/theoretical. Spatial concepts and the value of location: basic spatial concepts, location and demand the spatial demand curve. Hierarchies of services: location and competition the hotelling model, land value and land use, bounding a spatial market, models. Describing point patterns: regular (uniform, clustered (linear clustered) Linear clustered population pattern around the golden horseshoe: random (dispersed) Distance decay curve (interaction vs. distance: with greater from the destination, there is a decrease in attraction, distance decay describes a pattern.