Existing industry and commerce occupational groupings and foreseeable trends linked to economic factors now need to be constantly monitored as part of the planning process and the likely changes reflected in, (perhaps less simplistic ?) plan zoning . E.g. Rapidly developing communications technologies, even basic ones such as remote micro-conferencing and remote control of mobile machinery are having major effects on work patterns; and the daily movement of people, such as home to work; and the concentrations of workers, even in small commercial businesses, as well as in large scale heavy industries. It is not clear if, how and when this monitoring occurs and by whom? But more evidence and assurance that it is being done and reflected in outcomes is desirable.