Given that Adelaide is known as the city of churches, I thought taking a look at the distance between churches would give a good indication of the requirements for a walk about city and governance. The reasoning being is that historically churches were generally the centres of the community, thus all people typically gathered at the local church at least once a week. Such churches needed to be within walking distance of the population, if expect the population to get to the church. In some rural areas may be horse and cart may have been used by some, but in the main expect to be able to walk to the church.
Given average walking distance is 5 km/h, my first reasoning was that 1 hour was potentially the maximum time for walking before needing a rest or refreshment, therefore the churches should be no more than 5 km apart.
Figure 1, shows churches connected by lines if they are less than 5 km apart. It shows that most churches are concentrated around the city centre, and that they march outwards typically at 5 km centres. It was an expectation that ministers of a large central church, would visit local churches on foot, and that every 5 km, they would require rest and refreshment, and therefore churches would be no more than 5 km apart to achieve such.
To illuminate the big black cloud, a second diagram was generated connecting churches if they are less than 1 km apart. This diagram tends to indicate that for a walk about city, central facilities should be no more than 1 km apart, and that for good governance then may be we should have community halls at no more than 1 km centres. That is to say that our local government authorities and councils do not and cannot properly represent the community because it is not currently possible to get the community together in either one hall or one public space.
Communities should be human scale, and to be so, they need to be walkable.