QED for what? Don't you need to know how many people became homeless in ST and moved somewhere else in order to even attempt to draw some form of conclusion?

QED for what? Don't you need to know how many people became homeless in ST and moved somewhere else in order to even attempt to draw some form of conclusion? In general do homeless people continue living in the suburbs or do they move to cities? What exactly to do you feel was QED'ed here?