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Articles of convenience original: "Articles of convenience"; items that are not absolute necessities but contribute to a comfortable standard of living., 10 percent.
Articles of luxury, 15 to 20 percent.
I am aware that these distinctions belong to a way of thinking that is quite foreign to Political Economy In the 19th century, this term referred to the study of how societies manage resources, production, and trade—what we now simply call "economics." in its strict sense, and I am far from believing that they are as fair and useful as people generally assume. However, this subject is outside the scope of my current project.