This is not intended to be an accurate model of what actually happens in the real world. It's only supposed to test the hypothesis that minor but widespread individual bias can result in large-scale segregation.
No, it is not. You may want to reread it. Including the part where they explicitly state that the real world is a lot more complex, and where they give references to more in depth treatments.
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This is not intended to be an accurate model of what actually happens in the real world. It's only supposed to test the hypothesis that minor but widespread individual bias can result in large-scale segregation.
...which is then treated, in the remainder of the text, as though it were an accurate model of what happens in the real world.
No, it is not. You may want to reread it. Including the part where they explicitly state that the real world is a lot more complex, and where they give references to more in depth treatments.