Part 1: What Is Economics?
In Chapter 1 , we have added accelerating technological change and
rising protectionism to the initial list of economic challenges. We have
also rewritten the simple example of the choice between two products;
we now use a city planner with a fixed budget, choosing between
repairing roads and building new bike paths. We have improved the
discussion of how marginal benefits and marginal costs are used to make
decisions.