This book is simply brilliant. The messages are clear, and the examples to get the points across to the readers are superbly helpful. I don't bother with many diagrams as they illustrate variables and mechanisms effectively.
I'm not sure that there are also books with topics like this one. I think this book is a pioneer in the topic area. The author explain how public policies may directly and indirectly economic impacts on people's welfare, levels of public services, and many more. The question about choices on solving urban congestions, for example, can be viewed from the lens of economy. In this perspective, congestion is a matter of market imperfection, in which the demands of traveling exceed the capacities of mobility infrastructures. Or else, the housing market can be seen as stocks (e.g., the land availability) and flows (e.g., market value) that in the end constitute the balance between supply and demand.
Of course, there are over-simplified messages about how economy works. The economics of planning put people's behaviors into economic models that can be too simple to comprehend in actual implementation. But the model can help to structure information and recognize main variables affecting societal welfare. From there, decisions are made better than those without proven concepts on how public acts on resource limitation.