Exapno’s argument supports the theory concentric circles, and the master himself said that this is wrong. Railroads in the west needed large smelly stockyards next to them to load cattle, large areas to pile coal and store lumber and grain. The commercial district would be set up to one side or the other and the rich people build beyond the commercial district.
I did not know that.
I bet the vendors in the red light district were the only ones happy for the station to be sited there.
On the other side of the tracks things are different.
On the other side of the fence the grass is greener.
I have no idea what you mean by “the theory concentric circles”, though most cities pushed their boundaries back many times over the course of years. That doesn’t mean development proceeded evenly in all directions or that the same patterns of rich and poor took hold. There are always far more poor than rich.
Wrong side of the track cities are historically all in the industrial northeast, so that doesn’t apply to western cities in the first place, with a possible few exceptions. Even so, I’m curious if you could give some specific examples of what you’re talking about.