Where the words come from
The definition of scarcity, the limited resources including time, the choices forced on families, towns and nations, scarcity persisting after growth, and the definition of a shortage — Principles of Economics 2e, OpenStax, licensed CC BY 4.0. https://openstax.org/books/principles-economics-2e/pages/1-1-what-is-economics-and-why-is-it-important and https://openstax.org/books/principles-economics-2e/pages/3-1-demand-supply-and-equilibrium-in-markets-for-goods-and-services and https://openstax.org/books/principles-economics-2e/pages/2-3-confronting-objections-to-the-economic-approach. Changes: US labour-force and land-area figures dropped; "towns" to "a council", "national defense" to "defence", "fancy vacation" to "holiday"; the shortage sentence condensed from section 3.1 and the petrol-station scene dropped; the economic-good and free-good cards and the whole scarcity-against-shortage explain, and the recap's closing contrast drawn from it, are ours; the clause that scarcity remains, at a different level, after growth taken from the 2.3 Clear It Up, with "the budget constraint or a PPF shifts" put as an economy able to produce more; the explain defining economics dropped in the anatomy 4 retrofit to make room for the cards; British spelling.
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