In this text, the author has not relegated the illustrations and examples to 'boxes' or 'sidebars.' The examples are precisely the central concern of economics; they are the whole point of the theory. They are the only reason for developing the laws of demand, or diminishing marginal product, other than to analyze real, observable issues? The 'story problems' are economics, not 'illustrations' of economic theory.
Economists are just making all that shit up. They play it off like it's a hard "science" but they're just making it up. Like astrologers, they make predictions that turn out wrong and rather than finding out why they failed, they just make more predictions. Liars. Liars and thieves, and our world is run by them.