Sam Vimes's 'Boots' Theory of Socio-Economic Unfairness, from Terry Pratchett's Discworld novel Men at Arms, explains why the rich stay rich while the poor get poorer. The reason? Those with money can afford quality items that last for years, while everyone else buys cheap replacements that cost more over time. A good pair of leather boots costs fifty dollars and lasts a decade, while cheap ten-dollar boots leak after one season.

Someone earning thirty-eight dollars a month cannot afford the upfront cost, so they spend a hundred dollars on replacements and still have wet feet. This creates a poverty trap where the poor pay more. The theory resurfaces during economic austerity because it captures a universal experience: being unable to afford quality items that would save money long-term.

Those with resources make purchases that increase their wealth and comfort, while everyone else struggles with constant repairs and replacements. Consider the practical impact: laundromat costs versus owning a washing machine, unreliable vehicles requiring constant maintenance, and grocery shopping without bulk-buying savings. Poverty becomes both financially and temporally expensive, trapping people in a cycle of spending more for less.